Description:TANNIC ACID EXFOLIATED TUNGSTEN DISULPHIDE REINFORCED NATURAL RUBBER NANOCOMPOSITE AND METHOD OF PREPARATION THEREOF
CROSS-REFERENCES TO RELATED APPLICATIONS
None.
FIELD OF THE INVENTION
The present invention generally relates to polymer nanocomposites, and in particular to a rubber nanocomposite incorporating nanosheets exfoliated using a bio material to improve mechanical, thermal, antibacterial, and biocompatibility properties of polymer and its method of fabrication.
BACKGROUND OF THE RELATED ART
Transition metal dichalcogenides (TMD) represent a novel category of inorganic layered materials exhibiting metallic, semiconducting, and superconducting nature. Tungsten is a more abundant, cheaper, and less toxic metal in the Earth crust and is one of the heavier transition metals in the TMD group. Thus, tungsten disulfide (WS2) is gaining more research interest today. Bulk WS2 consists of robustly covalently bonded S-W-S sandwiches, here W atoms are situated between two atomic layers of sulfur. Weak van de , Claims:We claim:
1. A biopolymer nanocomposite (100) with improved mechanical, thermal, antibacterial and biocompatibility properties, comprising:
tannic acid (TA) (102) exfoliated tungsten disulphide (WS2) (103) as nanofiller (WT) sheets (104), incorporated into a natural rubber latex (NRL) (101) matrix, wherein the ratio of WS2:TA of 1:4 and amount of nanofiller in the nanocomposites varies from 0.5 to 5 phr of the matrix.

2. The nanocomposite (100) as claimed in claim 1, wherein the XRD analysis gives reduction in the intensity of peak at 14.3° indicating the exfoliation of tungsten disulphide with tannic acid in the NR nanocomposite.

3. The nanocomposite (100) as claimed in claim 1, wherein the optimum phr loading of WT nanosheets in NR is 1.5.

4. The nanocomposite (100) as claimed in claim 1, wherein the tannic acid exfoliated tungsten disulphide/ 1.5 phr loaded NR nanocomposite shows at least one of
23% increase in cross linking density,
32% increase in tensile strength,
7% increase in elongation a