▎ 摘　　要

NOVELTY - Conductive hydrogel nanocomposite comprises a biopolymer matrix, a conductive polymer which is dispersed in the biopolymer matrix, and conductive graphene derivative filler reinforcing the biopolymer matrix. USE - The nanocomposite is used in biosensing and/or biomedical applications. ADVANTAGE - The nanocomposite is electrically conductive, stress-responsive and safe, and has enhanced mechanical strength and electrical properties. The nanocomposite can be stored under distilled or deionized water for specific days. When the nanocomposite is stored for longer periods in a refrigerator, it does not show any sign of degradation in their mechanical, electrical and physical stability. The nanocomposite increases electrical properties on application of stress. The materials are harmless to skin, and shows excellent conductivity. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a method of preparation of the nanocomposite, comprising (i) centrifuging the conductive graphene fillers and drying to obtain conductive graphene fillers, (ii) homogenizing the conductive graphene fillers by probe sonication to obtain homogenized aqueous solution of conductive graphene fillers, (iii) mixing the homogenized conductive graphene fillers in a solution of a biopolymer and ethanol to obtain an aqueous solution, (iv) adding a conductive polymer with hydrochloric acid to the aqueous solution of biopolymer and conductive fillers to obtain an aqueous suspension, and (v) subjecting the aqueous suspension to physical crosslinking through repeated cycles of freezing and thawing to obtain the conductive hydrogel nanocomposite.