Thermal Emulsion Polymerization without any Conventional Initiators and Emulsifiers  

作　　者：Yong Zhong DU Fu Qiang HU Hong YUAN Shinzo OMI 

机构地区：[1]College of Pharmaceutical Science, Zhejiang University, 353 Yanan Road, Hangzhou 310031 [2]Graduate School of Bio-Applications and System Engineering, Tokyo University of Agriculture and Technology, Tokyo 184-8588, Japan

出　　处：《Chinese Chemical Letters》2006年第4期553-556,共4页中国化学快报（英文版）

摘　　要：Stable poly（styrene-co-sodium styrene sulfonate） （P（St-NaSS） nanoparticles with broader size distribution were synthesized by thermal emulsion polymerization without any conventional initiators and emulsifiers. The obtained polymer nanoparticles have higher potential, and the particle sizes have broad distribution. The stability of polymer particles originated from the addition of small amounts of ionic comonomer, NaSS, which can act as an emulsifier in somewhat. The monomer conversion could reach up to about 28 wt% in 48 h, and did not increase by further polymerization when higher polymerization temperature （120℃） was employed. This polymerization system may be give some further understand for mechanism of emulsion polymerization.Stable poly（styrene-co-sodium styrene sulfonate） （P（St-NaSS） nanoparticles with broader size distribution were synthesized by thermal emulsion polymerization without any conventional initiators and emulsifiers. The obtained polymer nanoparticles have higher potential, and the particle sizes have broad distribution. The stability of polymer particles originated from the addition of small amounts of ionic comonomer, NaSS, which can act as an emulsifier in somewhat. The monomer conversion could reach up to about 28 wt% in 48 h, and did not increase by further polymerization when higher polymerization temperature （120℃） was employed. This polymerization system may be give some further understand for mechanism of emulsion polymerization.

关 键 词：Thermal emulsion polymerization latex particles STYRENE sodium styrene sulfonate. 

分 类 号：O632.12[理学—高分子化学] O631.5[理学—化学]