Influence of the polymeric hydrophobe on the kinetics of vinyl acetate miniemulsion polymerization

被引：23

作者：

Aizpurua, I ^{[1
]}

Amalvy, JI ^{[1
]}

Barandiaran, MJ ^{[1
]}

机构：

[1] Univ Basque Country, Fac Ciencias Quim, Dept Quim Aplicada, Grp Ingn Quim,Euskal Herriko Unibertsitatea, E-20080 San Sebastian, Spain

来源：

COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS | 2000年 / 166卷 / 1-3期

关键词：

miniemulsion polymerization; polymeric hydrophobe; vinyl acetate;

D O I：

10.1016/S0927-7757(99)00293-9

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The influence of polymeric hydrophobes on the stabilization and kinetics of the vinyl acetate miniemulsion polymerization was investigated by conducting reactions in batch mode of miniemulsions prepared with poly(vinyl acetate) or polystyrene as cosurfactants. The results were compared with a miniemulsion stabilized with hexadecane and with the conventional emulsion. The shelf life stability analysis showed that miniemulsions prepared with polymer as the unique cosurfactant were not stable. However, the appearance of the separated phases was not similar to the conventional emulsion, which was interpreted as the formation of small monomer swollen particles in the case of the miniemulsion. The kinetic analysis confirmed the different nucleation mechanism of these unstable miniemulsions compared with the conventional emulsion. (C) 2000 Elsevier Science B.V. All rights reserved.

引用

页码：59 / 66

页数：8

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