Exploring the limits of branching and gel content in the emulsion polymerization of n-BA

被引：53
|
作者：
Gonzalez, Inigo
Leiza, Jose R.
Asua, Jose M.
机构：
[1] Univ Basque Country, Inst Polymer Mat, POLYMAT, Donostia San Sebastian 20080, Spain
[2] Univ Basque Country, Grp Ingn Quim, Dept Quim Aplicada, Fac Ciencias Quim, Donostia San Sebastian 20080, Spain
来源：
MACROMOLECULES | 2006年 / 39卷 / 15期
关键词：
D O I：
10.1021/ma060603g
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 possibility of synthesizing a highly branched poly(n-butyl acrylate) by emulsion polymerization was explored. Branching levels as high as 6.3% were obtained at high temperatures under starved conditions. Gel, which ranged from 53% to 78%, increased with temperature and process time. Highly branched polymers with gel contents of about 70% showed a very good shear resistance. It was found that the polymerization rate decreased with temperature. The mechanisms responsible for this surprising kinetics as well as for the formation of the microstructure were discussed.
引用
收藏
页码：5015 / 5020
页数：6
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