Synthesis of core-shell polyurethane-polydimethylsiloxane particles by polyaddition in organic dispersant media: Mechanism of particle formation

被引：7

作者：

Chambon, P ^{[1
]}

Cloutet, E ^{[1
]}

Cramail, H ^{[1
]}

机构：

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

来源：

MACROMOLECULAR SYMPOSIA | 2005年 / 226卷

关键词：

core-shell particles; dispersion polymerization; polyaddition; polydimethylsiloxane; polyurethane;

D O I：

10.1002/masy.200550821

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Core-shell polyurethane (PUR)-polydimethylsiloxane (PDMS) particles were prepared by polyaddition between ethylene glycol and tolylene-2,4-diisocyanate in cyclohexane, used as the organic dispersant phase, in the presence of reactive hydroxy-terminated polydimethylsiloxane steric stabilizers. The reaction extent and the PUR particle size, monitored by FTIR, H-1 NMR, SEC, SEM and TEM techniques against time, were found a function of the PDMS concentration, functionality and molar mass. A mechanism of the polyurethane particle growth is proposed on the grounds of the kinetic investigation.

引用

页码：227 / 238

页数：12

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