Synthesis and characterizations of waterborne polyurethane-silica hybrids using sol-gel process

被引：131

作者：

Jeon, Ho Tak

Jang, Moon Kyoung

Kim, Byung Kyu ^{[1
]}

Kim, Kwang Ho

机构：

[1] Pusan Natl Univ, Dept Polymer Sci & Engn, Pusan 609735, South Korea

[2] Pusan Natl Univ, Sch Mat Sci & Engn, Pusan 609735, South Korea

来源：

COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS | 2007年 / 302卷 / 1-3期

关键词：

polyurethanes; silicas; hybrids; crosslinking;

D O I：

10.1016/j.colsurfa.2007.03.043

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：

Using a sol-gel process nanometer-scale silicas were incorporated into waterborne polyurethanes (PUs) which were synthesized from isophoronediisocyanate (IM), poly(tetramethyleneglycol) (PTMG), dimethylolpropionic acid (DMPA), triethylamine (TEA), diethylenetriamine (DETA) and 3-aminopropyltriethoxysilane as coupling agent. Thermal, mechanical, and dynamic mechanical properties of the hybrid composite have been studied. Si-29-NMR spectra gave evidence of condensation reaction between silica and silanes encaping the PU prepolymers, whereas transmission electron microscopy (TEM) showed the high connectivity of hybrid composites. It was found that greater thermal and mechanical properties of waterborne PU/silica hybrid composite were obtained when chemical networks were formed between PU and silica. (C) 2007 Elsevier B.V. All rights reserved.

引用

页码：559 / 567

页数：9

共 26 条

[1] Preparation and characterization of hybrid nanocomposite coatings by photopolymerization and sol-gel process [J].