INFRARED STUDY OF THE COMPLEXATION OF POLY(ACRYLIC ACID) WITH POLY(ACRYLAMIDE)

Infrared spectroscopy was used to study the interpolymer complexation of poly(acrylic acid) with polyacrylamide. The spectrum of the interpo lymer complex showed characteristic absorption bands which are differe nt from those of the spectra of the individual components, particularl y in the O-H and N-H stretching vibration regions. The effects of ioni c strength and poly(acrylic acid) weight fractions on the spectral fea tures of the complex were investigated. It was found that hydrogen bon ding is the primary mechanism of interaction between the two polymers. (C) 1996 John Wiley & Sons, Inc.