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首页> 外文期刊>Colloids and Surfaces, A. Physicochemical and Engineering Aspects >Kinetic and size control of polystyrene and polyacrylic octadecyl ester lattices via polymerization in O/W microemulsions
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Kinetic and size control of polystyrene and polyacrylic octadecyl ester lattices via polymerization in O/W microemulsions

机译：通过O / W微乳液聚合反应控制聚苯乙烯和聚丙烯丙烯酸十八烷基酯晶格的动力学和尺寸

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摘要

The kinetic studies of the acrylic octadecyl ester and styrene polymerization in microemulsion systems, (1) cetyl pyridine bromide (CPDB)/t-butanol/styrene/water; (2) CPDB/t-butanol/toluene + acrylic octadecyl ester (1:1, w/v)/ water; (3) cetyl pyridine bromide/styrene/formamide, were made by using dynamic laser light scattering techniques (DLS). The mechanisms of nucleation of latex particles were discussed. The most possible nucleation location of the styrene and acrylic octadecyl ester microlatex particles in aqueous microemulsion system is in aqueous phase via homogeneous nucleation. Meanwhile, parts of microlatex particles are possibly produced via swollen micelles (microemulsions) and monomer droplets nucleation. On the other hand, the most possible nucleation location of the styrene microlatex particles in nonaqueous microemulsion system is inside monomer droplets. The relationship between the amount of monomer and the size of microlatex was also investigated. It has been found that the size of microlatex particles could be controlled by changing the amount of monomer. (C) 2002 Elsevier Science B.V. All rights reserved. [References: 20]
机译：微乳液体系中丙烯酸十八烷基酯和苯乙烯聚合的动力学研究，（1）十六烷基吡啶溴化物（CPDB）/叔丁醇/苯乙烯/水; （2）CPDB /叔丁醇/甲苯+丙烯酸十八烷基酯（1：1，w / v）/水; （3）通过使用动态激光散射技术（DLS）制备十六烷基吡啶溴化物/苯乙烯/甲酰胺。讨论了乳胶颗粒成核的机理。水性微乳液系统中苯乙烯和丙烯酸十八烷基酯微胶乳颗粒最可能的成核位置是通过均相成核在水相中。同时，微胶乳颗粒的一部分可能是通过溶胀的胶束（微乳液）和单体液滴成核而产生的。另一方面，在非水微乳液体系中，苯乙烯微乳胶颗粒最可能的成核位置是在单体液滴内部。还研究了单体量与微胶乳尺寸之间的关系。已经发现可以通过改变单体的量来控制微乳胶颗粒的尺寸。 （C）2002 Elsevier Science B.V.保留所有权利。 [参考：20]

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