Patent ID: 8828434
Filing Date: 2014-09-09
Classification: A61L,B82Y,C08F,C08J

Abstract:
1. A nanocomposite hydrogel comprising a hydrophilic polymer derived from polymerization of a hydrophilic vinyl monomer and crosslinked by a crosslinker comprising nanocrystalline cellulose (NCC), wherein said crosslinker comprises a modified NCC in which a modifier has a first functional group coupled with a hydroxyl group of the NCC, and a second functional group coupled to said polymer, wherein said second functional group is a vinyl group, each particle of said NCC being coupled to the first functional group of at least two units of the modifier to provide crosslinking of said hydrophilic polymer by said particle, said hydrophilic polymer comprising a plurality of vinyl polymer chains, each chain extending between a pair of spaced apart NCC particles; and each said particle of said NCC having a cross-section of 5-10 nm and a length of 20-100 nm.