简介：Basedonthepremisethattheadditionofglassbeads(GB)couldhardlyinfluencethelinearviscoelasticityinlowfrequency(ω)regionforhomogeneouspolymersystems,thedynamicrheologicalbehaviorsofunfilledandfilledpoly(methylmethyacrylate)(PMMA)/poly(styrene-co-acrylonitrile)(SAN)blendswerestudiedinordertoexploretheeffectofGBonthephase-separationofbinarypolymermatrix.ResultsshowthatGBhasaninducedeffectonthephase-separation,whichembodiesthatthephase-separationtemperature(T_s)ofPMMA/SANblendfilledwithGBislowerthanthatoftheunfilledsystem.ThehighercontentofGB,thehigheristhe“secondaryplateau”ofωintheterminalregionofstoragemodulus(G')versusωplot.The“secondaryplateau”appearingintheterminalregionisattributedtothephase-separationofPMMA/SANblendsanditbecomesmoreflatforfilledpolymerblendsunderthesameconditions.However,itissuggestedthatthiskindof“inducedeffect”isrelatedtotheGBcontent;thehighercontentofGBparticlesmightenhancetheinteractionbetweentheparticlesandpolymermatrix.Moreover,itisfoundthattheadditionofGBalsohasaninfluencemoreorlessonthemorphologyanddomainsizeofpolymermatrix.Itisbelievedthattheplotofdynamicviscosity(η')versusthelossviscosity(η')issensitivetoexaminetheeffectinducedbyGBonthephase-separationofbinarypolymermatrix.

简介：Spinodalphaseseparationbehaviorofpoly(methylmethacrylate)/poly(styrene-co-acrylonitrile)(PMMA/SAN)blendswasinvestigatedbythetime-resolvedsmallanglelightscattering(SALS)technique.Itwasfoundthattheinfluenceoftemperatureonthescatteringintensityevolutionfollowedthetime-temperaturesuperpositionprinciple.TherelationshipbetweentemperatureandtherelaxationtimeofscatteringintensityI(t)canbewelldescribedbytheWilliams-Landel-Ferry(WLF)function.