Emulsion graft polymerization: mechanism of formation of dispersions
Emulsion graft polymerization: mechanism of formation of dispersions
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DOI：
10.1016/s0927-7757(98)00687-6
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发表时间：
1999-07-15
影响因子：
5.2
通讯作者：
Kislenko, VN
中科院分区：
文献类型：
--
作者：
Kislenko, VN
研究了水溶性聚合物与甲基丙烯酸甲酯接枝聚合反应的三个阶段。接枝共聚物的聚合物粒子在整个过程中含有聚丙烯酸链、单体和水。在聚合的第一阶段形成的接枝共聚物是水分散体中聚合物粒子的稳定剂。单体在水相和聚合物粒子之间的分布表明，聚合反应一般在粒子内进行。散射比浊法和分散体系的吸附滴定研究表明，分散颗粒的吸附饱和度在过程中会发生变化，对于水溶性纤维素衍生物和硝基木质素的接枝共聚物，其最终吸附饱和度较高。(C)1999 Elsevier Science B.V.保留所有权利。
Three stages of the kinetics of graft polymerization of methyl acrylate onto water soluble polymers have been investigated. Polymer particles of graft copolymers contained polyacrylic chains, monomer and water during the whole process. Graft copolymer, formed on the first stage of the polymerization, is a stabilizer of polymer particles in water dispersion. The distribution of monomer between water phase and polymer particles showed that the polymerization proceeds generally in the particles. Nephelometric investigations and adsorption titration of dispersions showed that the adsorption saturation of dispersion particles can change during the process and its final value is high for graft copolymers of water soluble cellulose derivatives and nitrolignin. (C) 1999 Elsevier Science B.V. All rights reserved.