简介：Emulsifier-freeemulsionpolymerizationofstyreneinthepresenceofβ-hydroxypropylacrylatewasstudied.Theemulsifier-freeselfcrosslinkedpolystyrenelatexmicrosphereswasobtained.Monomerconversionishigherthan90%when[St],[β-HPA],[KPS]is2.66,0.228,and5.8×10^-3mol/Lrespectivelyunder80℃for5h.Themono-dispersedlatexparticlediameterandcolloidalparticleconcentrationweregivenasD=0.23um,N=3.13×10^13/cm^3byTEManalyse,Thefactorsofinfluencinglatexstabilitywerediscussed.ThecopolymerwascharacterizedbyIRanddissolutionexperiment.Theapparentactivationenergyofpolymerizationandpolymerizationrateconstantwereobtainedtobe78.7KJ/moland514.4/mol.srespectively.
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