Viscometric Studies of Graft Copolymers of Methylcellulose and Polyacrylamide

Abstract

Viscometric studies of graft copolymers (methyl cellulose g polyacrylamide) were made at four temperatures. The values of intrinsic viscosity of the graft copolymers were found to be much less than the linear methyl cellulose which was used as a backbone polymer. Intrinsic viscosity also decreased with the increase in the number and length of the branches.

Huggin's slope constant k' was found to be much higher than the linear methyl cellulose. k' values also increased with increase in the number of the branches as well as the length of the branches and are temperature dependent. These observations clearly indicate the branched nature of the copolymer.