Improved colloidal stability by seeded emulsion copolymerization of styrene with acrylic acid

被引：0
作者：
Reynhout, XEE [1 ]
Meuldijk, J [1 ]
Drinkenburg, BAH [1 ]
机构：
[1] Eindhoven Univ Technol, Proc Dev Grp, Dept Chem & Chem Engn, NL-5600 MB Eindhoven, Netherlands
来源：
AQUEOUS POLYMER DISPERSIONS | 2004年 / 124卷
关键词：
seeded emulsion polymerization; polymerization rate; styrene; acrylic acid; acrylic acid incorporation;
D O I：
暂无
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
The incorporation of acrylic acid (AA) in styrene (S) latex particles was investigated to improve colloidal stability. AA was added at high S conversions (> 0.7), using a two-step seeded emulsion polymerization of S. The addition moment and amount of added AA were varied. Conductometric titrations were used to study the spatial distribution of AA in the particles. The reactions were monitored by reaction calorimetry, which showed a delayed gel-effect for reactions with AA. Good surface incorporation of AA was obtained. The amount of surface AA increases with the amount of added AA and the amount of water phase AA increases with the addition moment. All copolymer latexes showed a significant increase in latex stability against coagulation compared to a PS latex.
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收藏
页码：64 / 67
页数：4
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