化工进展Issue(11)：2882-2887,6.DOI:10.3969/j.issn.1000-6613.2014.11.010
乳化剂浓度对苯乙烯乳液聚合成核机理的影响
Nucleation mechanisms in the emulsion polymerization of styrene at different surfactant concentrations
摘要
Abstract
Formulation of latex with styrene (St),potassium persulfate (KPS) and sodium dodecyl sulfate (SDS) was investigated as a function of SDS surfactant concentration [S] to explore its nucleation mechanism. The results showed that micellar nucleation dominated the nucleation process when the concentration of SDS was ≥ 8 mmol/L; while,precipitation nucleation dominated the process at 2mmol/L. From 2mmol/L to 8mmol/L,both micellar nucleation and precipitation worked;and the contribution of micellar nucleation increased with the increase of the concentration of SDS. Additionally,the particle number of latex was calculated:Np∝[S]0.9 when [S] was≥8mmol/L;Np∝[S]0.8 when 8mmol/L≥[S]≥2mmol/L.关键词
乳液/成核机理/乳化剂浓度/粒度分布Key words
emulsions/nucleation mechanism/surfactant concentration/particle size distribution分类
化学化工引用本文复制引用
许冰文,王红,何艳萍,肖小琴,孙彦琳..乳化剂浓度对苯乙烯乳液聚合成核机理的影响[J].化工进展,2014,(11):2882-2887,6.基金项目
国家自然科学基金项目（51163009）。 （）
