Preparation and morphology studies of core-shell type waterborne polyacrylate-polyurethane microspheres

被引：39

作者：

Dong, AJ ^{[1
]}

An, YL

Feng, SY

Sun, DX

机构：

[1] Tianjin Univ, Inst Chem Engn, Dept Organ Synth & Polymer Chem Engn, Tianjin 300072, Peoples R China

[2] Nankai Univ, State Key Lab Funct Polymer Mat Adsorpt & Separat, Tianjin 300071, Peoples R China

来源：

JOURNAL OF COLLOID AND INTERFACE SCIENCE | 1999年 / 214卷 / 01期

关键词：

polyacrylate-polyurethane microsphere; core-shell structure; particle size; particle size distribution; cross-linked structure;

D O I：

10.1006/jcis.1999.5847

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：

Core-shell type waterborne polyacrylate-polyurethane microspheres in which polyurethane acts as the shell and acrylic polymer as the core were prepared. Hydroxyethyl acrylate and adipic dihydrazide were used as cross-linking agents introduced to the ends of the shell molecular chains, and two kinds of cross-linked structures between the core and the shell were formed. The photon correlation spectroscopy studies indicate that all the microspheres present continuous particle-size distributions and their mean particle sizes are smaller than 200 nm. The transmission electron photographs reveal that there are obvious core-shell structures for the noncross-linked type microsphere particles and different cross-linked networks between the core and shell for the two kinds of cross-linked type microsphere particles. These microspheres possess excellent storage stability, water resistance, and coating properties. (C) 1999 Academic Press.

引用

页码：118 / 122

页数：5