Preparation and characterization of well-dispersed waterborne polyurethane/CaCO3 nanocomposites

被引：62

作者：

Gao, Xiaoyan ^{[1
]}

Zhu, Yanchao ^{[1
]}

Zhou, Shi ^{[1
]}

Gao, Wei ^{[1
]}

Wang, Zichen ^{[1
]}

Zhou, Bing ^{[1
]}

机构：

[1] Jilin Univ, Coll Chem, Changchun 130012, Peoples R China

来源：

COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS | 2011年 / 377卷 / 1-3期

关键词：

Waterborne polyurethane; CaCO3; Oleic acid; Surface modification; ISOTACTIC POLYPROPYLENE; MECHANICAL-PROPERTIES; OLEIC-ACID; CACO3; NANOPARTICLES; NUCLEATION; MONTMORILLONITE; CRYSTALLIZATION;

D O I：

10.1016/j.colsurfa.2011.01.025

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：

In this study, in order to improve the dispersion and increase the compatibility between nanoparticles and waterborne polyurethane (WPU) matrix, CaCO3 nanoparticles were firstly modified with oleic acid (OA). A series of WPU/CaCO3 nanocomposites were prepared by further in situ polymerization. SEM examination of the fractured surfaces of nanocomposites showed that OA-CaCO3 achieved well dispersion in WPU matrix. FTIR analysis suggested no major changes in the chemical structure of WPU in the presence of 2 wt% CaCO3. Thermal stability of WPU measured by TGA was greatly improved with the addition of OA-CaCO3. Meanwhile, the mechanical properties of the nanocomposites, examined by tensile tests, showed higher tensile strength than that of the pure WPU, especially incorporation of OA-CaCO3. (C) 2011 Elsevier B.V. All rights reserved.

引用

页码：312 / 317

页数：6

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