BRILLOUIN LIGHT-SCATTERING FROM POLY(VINYL ALCOHOL) HYDROGELS.

Abstract

The Brillouin shift and width for poly(vinyl alcohol) hydrogels of two different crosslink densities have been obtained as a function of gel network volume fraction using a five-pass Fabry-Perot interferometer. The results are discussed in the light of a theory for Brillouin lightscattering from gels proposed recently by J. A. Marqusee and J. M. Deutch.