Investigation of Complexation of Linear Poly(N‐vinyl‐2‐pyrrolidone) with Poly(methacrylic acid‐co‐methyl methacrylate) Gel

Abstract

The contraction of poly(methacrylic acid‐co‐methyl methacrylate) (P(MAA‐co‐MMA)) gel induced by complexation with linear poly( N ‐vinyl‐2‐pyrrolidone) (PVP) is quite different from that of poly(acrylic acid) (PAA) or poly(methacrylic acid) (PMAA) gel. It was found that the concentration of PVP has a strong effect on the complexation with P(MAA‐co‐MMA) gel. When PVP was introduced into the P(MAA‐co‐MMA) network, its dynamic mechanic properties vary greatly between complexed and uncomplexed networks. It had the following results: (1) the higher modulus ratio; (2) a slight contraction of gel.