Interpolymer Complex Formation Between Linear and Crosslinked Poly(acrylic acid) and Poly(vinyl ether of ethyleneglycol)

Z.S Nurkeeva,V.V Khutoryanskiy,G.A Mun,V.A Kan,E.M Shaikhutdinov

doi:10.18321/ectj369

Abstract

<p>The formation of H-bonded interpolymer complexes between linear and cross-linked poly(acrylic acid) and poly(vinyl ether of ethyleneglycol) is considered. The effects of pH and concentrations of polymers solution as well as the nature of the solvent on the complexation processes are discussed. It was found that the complexes are formed in aqueous solutions only below some critical pH value, which depends on the concentration of polymers and ionic strength of the solution. The interaction between gel of poly(acrylic acid) swollen in alcohol with solution of linear poly(vinyl ether of ethyleneglycol) is accompanied by formation of turbid layer of polycomplex and contraction of gel.</p>

Highlights

Interaction between two different macromolecular species may lead to the formation of an interpolymer complex (IPC), which essentially possesses properties entirely different from those of the component polymers
The critical pH value can be considered as some criterion of ability to form IPC for any interacting system consisting of poly(carboxylic acid) and nonionic polymer in aqueous solutions [12]
The critical pH of complexation was used as criterion of complex forming ability of the polymers in aqueous solutions

Summary

Introduction

Interaction between two different macromolecular species may lead to the formation of an interpolymer complex (IPC), which essentially possesses properties entirely different from those of the component polymers. As it was found earlier [9, 10] the addition of aqueous solution of PVEEG to aqueous solution of PAA in weakly acidic media (pH = 4÷5) does not lead to the formation of IPC and is accompanied by a marked increase of the intrinsic viscosity. The critical pH value can be considered as some criterion of ability to form IPC for any interacting system consisting of poly(carboxylic acid) and nonionic polymer in aqueous solutions [12].

Results

Conclusion