Description:FIELD OF INVENTION
The present invention relates to sugarcane waste (bagasse) regenerated filaments. Most preferably, the present invention provides bagasse filaments using solution spinning (dry jet wet) method. The sugarcane waste (bagasse) cellulose filaments produced are with high tensile strength, durability, sustainability, negligible chemical residue, non-toxic, biodegradable, environment friendly, better abrasion resistance, good washing fastness, good absorbency, desired breathability, desirable elasticity, easy to process, easy to maintain and engineer. The present invention also provides a process for preparation of regenerated sugar cane waste (bagasse) filaments.
BACKGROUND AND PRIORART OF THE INVENTION
Regenerated cellulose is a class of materials manufactured by the conversion of natural cellulose to a soluble cellulosic derivative and subsequent regeneration, typically forming either a fiber (e.g., rayon) or a film (e.g., cellophane). Regenerated cellulose forms can be continuous filament or staple fibers; they can be given many textures and properties like synthetic fibers. Viscose, rayon, acetate, triacetate, modal, Tencel, and Lyocell are few of the examples of regenerated fibers.
Sugarcane bagasse is a fibrous material containing cellulose as its main component. It is produced in large quantities across the world. It is a kind of waste material that comes from the sugar industry. It is most commonly used in paper industries, but different mechanical and chemical treatments can help to extract cellulosic fibers, pure cellulose, cellulose nanofibers, and cellulose nanocrystals. These extracted materials have diverse applications in regenerated cellulosic fibers and composite material production.
In the broader sense, after extraction of juice from sugarcane the entire residue is termed as ‘Bagasse’ which consists mixture of woody fiber, pith cells, and the unextracted juice constituents. However, this residual serves no purpose but to utilize as a fuel for the sugar making operations. Bagasse cannot be burned with any real efficiency. Due to low heat producing capacity bagasse has very low utilization compared to other fuels as it rarely exceeding in heat performance equivalent of a barrel of oil per ton of bagasse.
The bagasse obtained after extracting sugar juice is moisture laden with sugary juice remnants, hence needs to be sun dried before usage. The bagasse so dried is of less calorific value and produces less heat for boilers or any thermal equipment.
Bagasse is one of the largest agricultural residues and is produced in about 1000 million tons worldwide, produced during the processing of sugar cane into sucrose. At present, sugarcane bagasse is mainly used for papermaking, organic fertilizers, cultivated mushrooms, etc. The length of bagasse fiber is about 20 mm to 100 mm and fiber fineness varying from 14 Tex to 35 Tex. Bagasse fiber length is smaller than rice and wheat straw fibers. The fiber has comparatively low strength due to its fibrous nature. Bagasse contains high levels of sucrose in it, making it unsuitable for textile fiber as such.
Moreover, the bagasse obtained is a fibrous material consisting of 50% moisture, so additional drying treatment is required. Bagasse fiber contains 40–50% cellulose and 25–35% hemicellulose and lignin making it highly energy demanding and producing low grade cellulose. Due to presence of high hemicellulose and lignin bagasse fibers needs to be treated with steam and other chemicals to dissolve or extract cellulose.
Existing Bagasse fibers have at least one or many of disadvantages such as
1. Difficult to produce and has less tensile strength, less applicability in textile industry, produce toxic gases or byproducts.
2. Bagasse fibers shows environmental Concerns with crucial Chemical Processing. The production of regenerated bagasse fibers involves the use of various chemicals, such as carbon disulfide, which can be harmful to the environment if not properly managed.
3. The existing production process requires significant amounts of water and energy, contributing to water scarcity and energy consumption issues.
4. Existing regenerated bagasse fibers are not durable and may be prone to wear and tear and also microbial degradation, which shortens their lifespan.
5. These fibers tend to wrinkle easily, making garments made from them more prone to creasing and requiring more frequent ironing or steaming.
6. Bagasse fibers can shrink when exposed to heat and moisture, which can be problematic in the care and maintenance of garments.
7. These fibers in wet condition can lose their strength and shape, making them less ideal for some applications.
8. They do not provide as much thermal insulation as some other natural or synthetic fibers, which may limit their use in cold-weather clothing.
9. Bagasse fibers show low dye uptake with low color fastness and perspiration fastness. Bagasse fibers show low washing fastness especially for darker shades.
The exploitation of this source of raw material relates to an economical use for the production of products with similar properties. Especially for tropical countries, sugarcane is the plant with the highest annual growth, which is why the bagasse is a very significant cellulose source. The production of pulp from bagasse has been described by V. Lopuja and 0. Triana in Cuba Azucar Ur. 3. (1970) 31-39 and L. Puentes Aguilar in Ing. Quimica Mexico 9, (1964). 10-15. The recovery of viscose from bagasse pulp was judged by the illustration of difficulty in relation to filtration properties (S. El Shortano, Egypt J. Chem., 17 (1974), No. 3, 255-265). In the description of the invention of O.Quintela and D. Paul, registration number CU 35-267 of 22.5.1980 of the Oficina National de Invencione Informacion Tecnica y Marcas in Havana / Cuba, the production of a viscose from Bagasse has been described with good filtration properties anyway , so far, there are few papers dealing with the procedures for the production of viscose textile fibers from bagasse pulp. GJ Sleyjhar (Silk Rayon Ind. India 4 (1961), 7, 14-15) obtained a thread having a dry tensile strength of zero , 16 N / tex and a tear tenacity of 0.08 IT / tex and an elongation of 22 and 32 %, respectively, in accordance with a work by A. Locus (Tappi 43 (1960) Er. 1, 111-115) in the possibility of producing a yarn with a dry strength of 0.19 IT / Tex and a hail resistance of 0.09 N / Tex with an elongation of 15 and 21 %.
Disadvantageous for the results obtained are undoubtedly the properties of the textile threads, which limit the use and the use of the same, especially with regard to strength and elongation
Kao Chieh u. Al. (Cell Chem., Technol., 1, 4 (1980), 441-455) describe a process for the preparation of modified high wet strength fibers of a viscose from bagasse pulp. In this case, the alkalization of the pulp with a sodium hydroxide solution of the content of 245 g of sodium hydroxide / 1 and the sulfidation with 44 % carbon disulfide, based on cellulose performed. However, the proposed high concentrated hydrogen lye concentrator affects the uniformity of the resulting alkali cellulose and thus unfavorable to the Filtrations of the viscose, even if a certain improvement is achieved by very high carbon disulphide inputs. The use of a negative stretch of 40 to 55 % in the coagulation bath proposed by Kao brings considerable difficulties, due to the high swelling tendency of bagasse cellulose.
Hence there was a need of the hour to utilize this bagasse in a sustainable and productive manner. Using sugarcane bagasse to prepare sustainable materials will expand the sugarcane industry supply chain and increase the income of sugarcane farmers.
IN202141003308- A hybrid reinforced composite material which comprises bagasse (Sugarcane dry pulp)-pineapple leaf fiber (PLF) - basalt fibres, the fibers being mixed in a matrix of bio epoxy resin using a catalyst to effect complete mixing of the said powdered fibers to yield the hybrid reinforced composite, the hybrid composite capable of being molded to any geometrical object, having a low water retention property, less carbon composition, degradable applications in covering elements with structural tasks in automobile accessories.
CNA2008100423852A-Method for preparing bagasse dissolving pulp by improved prehydrolysis alkaline process and product thereof including depithing and washing; prehydrolysis, which is carried out in a hydrolyser, however there’s no mention of fibers or filaments production from the pulp.
Regenerated cellulose fibers from waste bagasse using ionic liquid-Wei Jiang- using the ionic liquid 1-butyl-3-methylimidazolium chloride (BMIMCl) as a solvent. Two different ionic liquid solutions were prepared with 6 wt% of bagasse cellulose and 6 wt% of wood cellulose. However, this paper explains about fibers and films only, it doesn’t mention filament making from bagasse or bagasse filaments, also the solvent used is ionic liquid.
The above prior arts suggest cellulose or bagasse films from bagasse, which are technically difficult to be used for weaving fabrics, textiles or to be knitted or used for blending with another fibers. There is a long awaited need for making bagasse filaments from sugarcane or sugar industry waste with high tensile strength for making, weaving and knitting into fabrics.
Fibers in general are of staple length and with discrete properties and have to undergo further processing to convert it in to yarn and then fabric making. Filaments are of continuous length and can be directly utilized in yarn. Hence, above mentioned prior arts provide details of bagasse fibers manufacturing it. While there is no single prior art to describe about bagasse filament manufacturing. The existing bagasse fibers does lack required morphology. And most often the processes mentioned are just experiments and lab scale processes, and are not practically and industrially viable, suggesting more functional difficulties.
As discussed above, there is need which exists in the art to have bagasse filament of continuous length, with high abrasion resistance and high tensile strength as desired for textile, obtained by solution spinning method from sugarcane wastes. Hence, the inventors of the present invention provides a dry jet wet spun and wet spun filament obtained from sugarcane waste (bagasse) by method using minimum non-reactive, reusable and regenerable solvent system. The solvent system with less concentrations and easily recoverable as compared to prior arts.
The discussion of documents, acts, materials, devices, articles, and the like is included in this specification solely for the purpose of providing a context for the present invention. It is not suggested or represented that any or all of these matters formed part of the prior art base or were common general knowledge in the field relevant to the present invention as it existed before the priority date of each claim of this application.
The present invention aims at the problems existing in the comprehensive utilization of bagasse and regenerated bagasse filaments, and provides a high-strength, regenerated bagasse filament using sugarcane waste (bagasse) as main raw materials.
OBJECTIVES OF THE INVENTION
? A primary objective of the present invention is to develop a natural bagasse filament by solution spinning.
? The objective of the present invention is to develop a bagasse filament with high tensile strength, durability and sustainability.
? Another objective of the present invention is to develop a bagasse filament with better abrasion resistance, resilient to multiple washing cycles, good absorbancy, desired breathability, desirable elasticity and anti-microbial properties.
? Another objective of the present invention is to develop a bagasse filament with good dye-ability and colour fastness, light fastness, perspiration fastness, easy to process, easy to maintain, and engineer further into various formations.
? Another objective of the present invention is to develop a method to produce bagasse filament with higher tensile strength ranging between 100-600 gmf (Gram force) and elongation at break range of 2-20%.
? Another objective of the present invention is to develop a bagasse filament amenable to blending with various natural and synthetic fibers.
SUMMARY OF THE INVENTION
Present invention relates to bagasse filament obtained from sugar industry process waste with solution spinning method comprising dissolving the natural bagasse in at least a solvent, a co-solvent, with or without co-surfactant and water. The process including bagasse pre-treatment, cellulose dissolution, spinning solution preparation, dry jet wet spinning process, filament drawing and settling, post treatment and finishing.
STATEMENT OF THE INVENTION
Present invention relates to bagasse filament using bagasse obtained as a waste from sugar industry with solution spinning method comprising Bagasse Pre-Treatment-Bagasse collected and subjected to a pre-treatment process to remove impurities, lignin, and hemicellulose. The bagasse washed to remove surface dirt and contaminants. And mechanically disintegrated & chemically treated to break down lignin and hemicellulose, resulting in purified cellulose-rich fibers. The purified bagasse fibers are treated with a solvent capable of dissolving cellulose. Suitable solvents may include ionic liquids, N-methylmorpholine-N-oxide (NMMO), or 1-butyl-3-methylimidazolium chloride (BMIMCl) other cellulose-dissolving agents. This step yields a cellulose solution, which may require further filtration or purification to remove any residual impurities. The additives are added to cellulose solution to enhance its spinnability and filament properties. Additives may include viscosity modifiers, dye precursors, and cross-linking agents. This spinning solution then degassed to remove any entrapped air bubbles. The spinning solution loaded into a wet spinning machine, which consists of a spinneret and a coagulation bath. The spinneret has multiple fine nozzles, and the spinning solution is extruded through these nozzles into the coagulation bath. The coagulation bath contains a non-solvent for cellulose, which causes the cellulose to precipitate and form solid filaments. The freshly formed filaments are drawn through a series of rollers to orient and align the cellulose chains, enhancing the mechanical properties of the filaments. The drawn filaments are then passed through a setting bath or oven to stabilize their molecular arrangement. The stabilized filaments are subjected to post-treatment processes such as washing, bleaching, dyeing, and surface treatments to improve their appearance, performance, and compatibility with other materials and yarn.
BRIEF DESCRIPTION OF DRAWINGS:
For a more complete understanding of the features and advantages of the present invention, reference is now made to the detailed description of the invention along with the accompanying figures and in which:
Figure 1: Solution spinning system
Figure 2: FTIR Spectrum of bagasse filament obtained.
Figure 3: SEM image of bagasse filament
Figure 4: SEM image of Cross section of bagasse filament.
Figure 5: DSC analysis of bagasse filament.
Figure 6: TGA analysis of Bagasse filament
DETAILED DESCRIPTION OF THE INVENTION
The making and using of various embodiments of the present invention are discussed in detail below as; it should be appreciated that the present invention provides many applicable inventive concepts that can be embodied in a wide variety of specific contexts. The specific embodiments discussed herein are merely illustrative of specific ways to make and use the invention and do not delimit the scope of the invention.
To facilitate the understanding of this invention, a number of terms are defined below. Terms defined herein have meanings as commonly understood by a person of ordinary skill in the areas relevant to the present invention. Terms such as "a", "an" and "the" are not intended to refer to only a singular entity but include the general class of which a specific example may be used for illustration. The terminology herein is used to describe specific embodiments of the invention, but their usage does not delimit the invention, except as outlined in the claims.
The term “fiber,” as used herein, refers to the cylindrical structures with an outer diameter below 1,000 nm and an aspect ratio the ratio between length and width greater than 50. Term “filament” as used herein, refers to the cylindrical structures with continuous long length. As per IPC classification “Fiber” means a relatively short, elongated member of natural or man-made material, and “filament" means an endless or quasi-endless, elongated member of natural or man-made material. A filament is continuously long, thin, flexible, and thread-like object or material. Filaments can be found in various forms and are used in different contexts, herein it is used in reference to textile manufacturing.
The term “Cellulose,” as used herein, refers to an organic compound with the formula (C6H10O5)n, a polysaccharide consisting of a linear chain of several hundred to many thousands of ß linked D-glucose units. Cellulose is an important structural component of the primary cell wall of a plant, many forms of algae and oomycetes.
Cellulose is mainly used for textiles and paper production. The term “Bagasse,” as used herein, refers to the dry pulpy fibrous material that remains after crushing sugarcane stalks to extract juice, remeaning refuse or trash.
In accordance of the present invention, the Bagasse filament can be prepared from sugar industry process waste or agriculture waste by methods selected from drawing, self-assembly, forced spinning, solution spinning and extrusion.
In accordance with the present invention, the bagasse filament is prepared from sugar industry waste or agriculture waste by a solution spinning method. The bagasse filament’s tenacity is obtained is comparable to the other cellulose filaments.
Advantages:
• The method provides an environmentally friendly way to convert bagasse, an agricultural waste product, into valuable regenerated filaments.
• The resulting filaments can be used in various textile applications, including apparel, home textiles, and technical textiles.
• By using bagasse, the method reduces the reliance on traditional cellulose sources like wood pulp.
The present invention relates to a system for manufacturing bagasse filaments by dry jet wet spinning and wet spinning. As mentioned earlier, there remains a need for the bagasse filaments and a method to produce bagasse filaments that have high tensile strength, sustainable, negligible chemical residue, non-toxic, biodegradable, and environment friendly. The present disclosure provides a bagasse filament with high tensile strength, durability, sustainability, better abrasion resistance, resilient to multiple washing cycles, good absorbance, desired breathability, desirable elasticity, and anti-microbial properties, good dye-ability and colour fastness, easy to process, and engineer further into various formations. The present disclosure also provides a method to produce bagasse filaments that may be continuous and aligned. The present disclosure also provides the method of producing bagasse filaments that have higher tensile strength ranging between 1.5 to 9.5 gpd and elongation at break range of 3 to 15%, abrasion resistance above 12000 cycles.
The bagasse filaments from natural sources ensured enhanced physical properties and morphology. The formulation not only improved the tensile strength, durability, negligible chemical residue, non-toxic, biodegradable but also showed increased sustainability, better abrasion resistance, resilient to multiple washing cycles, good absorbency, desired breathability, desirable elasticity, good dye-ability and colour fastness, easy to process and engineer further into various formations of yarns, fabrics, non-woven, film and felts.
In one embodiment the bagasse source has impurities or trash, may be subjected to precleaning processes such as mechanical or chemical, blowing and sorting. In one embodiment the bagasse with impurities is pass through precleaning machines.
In another embodiment the bagasse is collected and grinded to powder form. In one embodiment cellulose extracted from bagasse by various treatments, such as dewaxing, alkaline treatment, dilute acid treatment, two step bleaching.
In one embodiment such extracted cellulose may be dissolved in solvents selected from Non derivatizing solvents, Aqueous solvents, Sodium Hydroxide, Urea, Thiourea, PEG, Lithium Hydroxide, Mineral acids, Molten salt hydrates.
In another embodiment solvents may be selected from Organic solvents, N-Methyl Morpholine Oxide/H2O, N-Methyl Morpholine Oxide/DMSO
N,N-dimethylacetamide/lithium chloride (DMA/LiCl).
In one more embodiment solvents may be selected from Ionic Liquids, 1-Butyl-3-methylimidazolium chloride (BMIMCl),1-Allyl-3-methylimidazolium chloride (AMIMCL), 1-Ethyl-3-methylimidazolium acetate (EMIMAC)
In one embodiment solvents may be selected from Derivatizing solvents, Dinitrogen tetroxide/dimethylformamide (N2O4 /DMF), Carbondisulfide Sodium Hydroxide CS2/NaOH/H2O, Formic Acid, Sulphuric acid, Trifluoroacetic acid, HCOOH/H2SO4, CF3COOH, NMMO (N-Methylmorpholine N-oxide), ionic solvent such as 1-butyl-3-methylimidazolium chloride (BMIMCl), 1-allyl-3-methylimidazolium chloride (AMIMCl)) and the like. More preferably N-Methylmorpholine oxide (NMMO) or Dimethyl sulfoxide (DMSO) or combination of both for dissolution of Cellulose waste fibers. Water based NMMO helps in dissolution of cellulose, while DMSO helps in viscosity adjustments.
In other embodiment antioxidants are selected from Propyl Gallate or to prevent thickening of the cellulose solutions and effective flow from injection syringes.
In another embodiment the Flow rate ml/hr is selected from 0.5 to 10 ml/hr, more preferably from 2 to 5 ml/hr, collector assembly may be placed at the distance 5 to 50 cm. More preferably the distance between the syringe needle and the collector is selected from 5 to 25 cm.
In an embodiment the spinning is done by application temperature ranges from 20°C to 50°C. In another embodiment the Spinning angle of syringe needle is selected from 25o, 30o, 40o, 45o,50o, 55o, 60o and 65o, more preferably from 45o in horizontal settings.
In one more embodiment the bagasse filaments spun from one or more nozzles of the spinneret assembly may be collected by a collector assembly attached to one or more nozzles of the spinneret assembly and the collector assembly may a rotating funnel shaped collector or a stationary collector such as a plate collector, disc collector and the like. In another embodiment, the collector assembly may be placed in ambient atmosphere or immersed in a solvent bath or coagulation bath to obtain a consolidated matrix of fibers. In one embodiment, the coagulant bath of solvent may be hydrophobic, hydrophilic, polar, non-polar, ionic, or a combination in nature wherein the coagulation bath may be maintained at a temperature range from 5°C to 100°C may make the bagasse filaments to precipitate, forming a thin continuous filament.
As per one of the embodiment winding the bagasse filament obtained onto a spool assembly by means of a winding device/equipment, the winding device may include, but not limited to, drum winding device, precision winding device or the like. The winding device may wind the bagasse filament in form selected from various forms like cone form, cheese form, yarn ball, bobbin, foil. The bagasse filaments may wind as circumferential, hoop, helical, polar, or other ways suitable for packing and handling of the yarn. In another embodiment of the present disclosure, a dye/additive may be incorporated to endow colour or colour fastness to the obtained bagasse filament.
In one embodiment bagasse filament from solution spinning method, wherein bagasse is obtained from sugarcane waste.
In another embodiment bagasse may be collected and subjected to a pre-treatment process to remove impurities, lignin, and hemicellulose.
In further embodiment bagasse may be washed to remove surface dirt and contaminants, mechanically disintegrated & chemically treated to break down lignin and hemicellulose, resulting in purified cellulose-rich fibers.
In one embodiment purified bagasse fibers are treated with a solvent capable of dissolving cellulose. Suitable solvents may include ionic liquids, N-Methylmorpholine-N-oxide (NMMO), or 1-butyl-3-methylimidazolium chloride (BMIMCl) other cellulose-dissolving agents. This step yields a cellulose solution, which may require further filtration or purification to remove any residual impurities.
In one embodiment additives may be added to cellulose solution to enhance its spinnability and filament properties. Additives may include viscosity modifiers, dye precursors, and cross-linking agents. This spinning solution then degassed to remove any entrapped air bubbles. The spinning solution loaded into a wet spinning machine, which consists of a spinneret and a coagulation bath. The spinneret has multiple fine nozzles, and the spinning solution is extruded through these nozzles into the coagulation bath. The coagulation bath contains a non-solvent for cellulose, which causes the cellulose to precipitate and form solid filaments. The freshly formed filaments are drawn through a series of rollers to orient and align the cellulose chains, enhancing the mechanical properties of the filaments. The drawn filaments are then passed through a setting bath or oven to stabilize their molecular arrangement. The stabilized filaments are subjected to post-treatment processes such as washing, bleaching, dyeing, and surface treatments to improve their appearance, performance, and compatibility with other materials and yarn.
The present invention is further described with the help of the following examples, which are given by way of illustration all the parts, percent's and ratios are by weight unless otherwise indicated and therefore should not be construed to limit the scope of the invention in any manner.
EXAMPLES: Ingredients of composition in weight percentage range or in other unit in following conditions:
Examples 1: For preparation of the cellulose filament from sugarcane bagasse:
Sugarcane bagasse was collected, ground, and sugarcane bagasse powder was obtained. Cellulose was extracted from sugarcane bagasse powder by giving treatment such as dewaxing, alkaline treatment, dilute acid treatment and finally first step and second step of bleaching treatment. The treated samples were dissolved in 0.5 to 15 wt. % ratios of NMMO solvent. The syringe was filled with solution with various process parameters were set with a flow rate 1 to 50 ml/hr of syringe needle. The cellulose filaments were spun, collected and immersed in water bath with solvent media ( solvent in water) followed by exchange of excess solvent in bath and further passed through air drying.
Examples 2: For preparation of the cellulose filament from sugarcane bagasse on lab scale machine wet spinning:
Sugarcane bagasse was collected, ground, and sugarcane bagasse powder was obtained. Cellulose was extracted from sugarcane bagasse powder by giving treatment such as dewaxing, alkaline treatment, dilute acid treatment and finally first step and second step of bleaching treatment. The treated samples were dissolved in 0.5 to 15 wt. % ratios of NMMO solvent. The lab scale wet spinning machine hopper was filled with solution with various process parameters were set, and hopper chamber is jacketed with heating coil providing continuous stirring with 45 oC to 50 oC. The cellulose dope was passed through gear pump followed by spinneret nozzles (single nozzle / multiple nozzle) to spun into filament(s).
The spinneret was arranged in wet jet manner wherein there is no air gap between extruded filament dope and solvent exchange media in a bath. The spinneret is completely immersed in solvent exchange bath. The extruded filaments were collected and immersed in water bath with solvent media ( solvent in water) followed by exchange of excess solvent in bath and further passed through drying chamber. Dried filament(s) were further wound on cheese or cone.
Examples 3: For preparation of the filament from bagasse on lab scale machine: Sugarcane bagasse was collected, ground, and sugarcane bagasse powder was obtained. Cellulose was extracted from sugarcane bagasse powder by giving treatment such as dewaxing, alkaline treatment, dilute acid treatment and finally first step and second step of bleaching treatment. The treated samples were dissolved in 0.5 to 15 wt. % ratios of NMMO solvent. The lab scale wet spinning machine hopper was filled with solution with various process parameters were set, and hopper chamber is jacketed with heating coil providing continuous stirring with 45 oC to 50 oC. The cellulose dope was passed through gear pump followed by spinneret nozzles (single nozzle / multiple nozzle) to spun into filament(s).
The spinneret was arranged in dry jet manner wherein there is air gap with range of 5cm to 25 cm, between extruded filament dope and solvent exchange media in a bath. The extruded filaments were collected and immersed in water bath with solvent media ( solvent in water) followed by exchange of excess solvent in bath and further passed through drying chamber. Dried filament(s) were further wound on cheese or cone.
Example 4: For preparation of the cellulose filament from sugarcane bagasse on lab scale machine wet spinning: Sugarcane bagasse was collected, ground, and sugarcane bagasse powder was obtained. Cellulose was extracted from sugarcane bagasse powder by giving treatment such as dewaxing, alkaline treatment, dilute acid treatment and finally first step and second step of bleaching treatment. The treated samples were dissolved in 0.5 to 15 wt. % ratios of NMMO solvent. The lab scale wet spinning machine hopper was filled with solution with various process parameters were set, and hopper chamber is jacketed with heating coil providing continuous stirring with 45 oC to 50 oC. The cellulose dope was passed through gear pump followed by spinneret nozzles (single nozzle / multiple nozzle) to spun into filament(s).
The spinneret was arranged in wet jet manner wherein there is no air gap between extruded filament dope and solvent exchange media in a bath. The spinneret is completely immersed in solvent exchange bath. The extruded filaments were collected and immersed in water bath with solvent media at ambient temperature twice ( solvent in water). Followed by exchange of solvent in bath and further passed through drying chamber. Dried filament(s) were further wound on cheese or cone.
Example 5: For preparation of the filament from bagasse wet spinning (Varied temperature): Sugarcane bagasse was collected, ground, and sugarcane bagasse powder was obtained. Cellulose was extracted from sugarcane bagasse powder by giving treatment such as dewaxing, alkaline treatment, dilute acid treatment and finally first step and second step of bleaching treatment. The treated samples were dissolved in 0.5 to 15 wt. % ratios of NMMO solvent. The lab scale wet spinning machine hopper was filled with solution with various process parameters were set, and hopper chamber is jacketed with heating coil providing continuous stirring with 45 oC to 50 oC. The cellulose dope was passed through gear pump followed by spinneret nozzles (single nozzle / multiple nozzle) to spun into filament(s).
The spinneret was arranged in wet jet manner wherein there is no air gap between extruded filament dope and solvent exchange media in a bath. The spinneret is completely immersed in solvent exchange bath. The extruded filaments were collected and immersed in cold ( 10 oC to 20 oC) water bath with solvent media ( solvent in water). Followed by second passage of solvent exchange with bath having ambient temperature and further passed through drying chamber. Dried filament(s) were further wound on cheese or cone.
Example 6: Bagasse Yarn Properties- Physical Properties

Sr.no. Quality Parameters/Properties Values
1 Yarn count (Denier) 297.72
2 Tensile strength (gms) 155.07
3 Elongation % 7.14
4 Moisture content % 11.66
5 Moisture Regain % 7.73
6 Yarn Abrasion (No. of cycles) > 12000
7 Hot water shrinkage % 2-4
8 Crystallinity % 54-62
All of the compositions and/or methods disclosed and claimed herein can be made and executed without undue experimentation in light of the present disclosure. While the compositions and methods of this invention have been described in terms of preferred embodiments, it will be apparent to those of skill in the art that variations may be applied to the compositions and/or methods and in the steps or in the sequence of steps of the method described herein without departing from the concept, spirit and scope of the invention. All such similar substitutes and modifications apparent to those skilled in the art are deemed to be within the spirit, scope and concept of the invention as defined by the appended claims. , Claims:CLAIMS

I Claim,
1. A bagasse filament from sugar cane process wastes having textile purpose wherein the filaments are of
a. count range 50 to 600 denier and
b. continuous length filament
c. tensile strength of 1.5 to 9.5 gpd
d. elongation at break range of 3 to 15%
e. abrasion resistance more than 12000 cycles
f. Moisture regain ranges in 6 to 14 %
the method comprises of Precleaning, Spinning solution Preparation,
filament generation.
2. The bagasse filament as claimed in claim 1, wherein the filament preparation includes solution spinning by solubilization of precleaned bagasse in solvent, Stabilizing the dope solution, Viscosity adjustment and Spinning.
3. The bagasse filament as claimed in claim 1, wherein sugar cane wastes include cellulosic wastes from sugarcane.
4. The bagasse filament as claimed in claim 1, wherein the wastes is solubilized in Non derivatizing solvents, Aqueous solvents, Organic Solvents, Ionic Solvents, derivatizing solvents selected from or combinations of Sodium Hydroxide, Urea, Thiourea, Lithium Hydroxide, Mineral acids, Molten salt hydrates, N-Methyl Morpholine Oxide, N,N-dimethylacetamide, 1-Butyl-3-methylimidazolium chloride (BMIMCL),1-Allyl-3-methylimidazolium chloride (AMIMCL), 1-Ethyl-3-methylimidazolium acetate (EMIMAC), Dinitrogen Tetroxide, Carbon disulfide, Formic Acid, Sulphuric acid, Trifluoroacetic acid, Diethyl dibenzyl ammonium hydroxide, Anhydrous hydrazine, Methylamine, Sulphur dioxide, Ammonia, Formaldehyde, Thionyl chloride, Formamide. 1-butyl-3-methylimidazolium chloride, 1-allyl-3-methylimidazolium chloride, Dimethyl sulfoxide.
5. The bagasse filament as claimed in claim 1, wherein the dope formation is in range of 0.5 to 20 % w/w of cellulose concentration with cellulosic retention at filament stage is 65 to 90 % w/w.
6. The bagasse filament as claimed in claim 1, wherein the stabilization of solution is done by addition of antioxidant selected from water soluble or lipid soluble antioxidants, Propyl gallate, Alpha Tocopherol, Hydroxytyrosol.
7. The bagasse filament as claimed in claim 1, wherein the spinning is done by wet spinning and dry jet wet spinning.
8. The bagasse filament as claimed in claim 1, wherein the bagasse filaments highly textile grade and suitable for all types of fabric forming systems, which are weaving, knitting, braiding, felting applications in home textile, medical textile, agrotech, clothtech, mobitech, sportech, geotextiles and packtech.