Polyaddition reaction in a dispersed medium: Elaboration of new core-shell polyurethane particles

被引：7

作者：

Chambon, P ^{[1
]}

Radhakrishnan, B ^{[1
]}

Cloutet, E ^{[1
]}

Papon, E ^{[1
]}

Cramail, H ^{[1
]}

机构：

[1] Univ Bordeaux 1, CNRS, UMR 5629, Lab Chim Polymeres Organ,ENSCPB, F-33607 Pessac, France

来源：

MACROMOLECULAR SYMPOSIA | 2003年 / 199卷

关键词：

core-shell particles; dispersion; polyurethane;

D O I：

10.1002/masy.200350905

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 elaboration in a dispersed organic medium of calibrated polyurethane particles with a core-shell structure is presented in this paper. The objective could be achieved by using a series of reactive steric stabilizers of the type omega-(OH)(x)-poly(n-butyl acrylate), -polystyrene, -polysiloxane or -polybutadiene (x=1 or 2) that play the role of surfmers during the polyaddition reaction between ethylene glycol and tolylene-2,4-diisocyanate, in cyclohexane as a dispersant medium. The final size of the polyurethane particles (0,5-10 mum) was found to be a function of the steric stabilizer characteristics (nature, molar mass and concentration) and of the addition procedure of the different reactants. These novel particles constituted of a polyurethane core and various shells depending on the stabilizer used exhibit specific and original properties.

引用

页码：47 / 57

页数：11

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