Roles of anatase and rutile TiO2 nanoparticles in photooxidation of polyurethane

被引：131

作者：

Chen, Xu Dong ^{[1
]}

Wang, Zhi

Liao, Zheng Fu

Mai, Yu Liang

Zhang, Ming Qiu

机构：

[1] Zhongshan Univ, Inst Sci Mat, Sch Chem & Chem Engn, Guangzhou 510275, Peoples R China

[2] Zhongshan Univ, Minist Educ, Key Lab Polymer Composite & Funct Mat, Guangzhou 510275, Peoples R China

[3] Guangdong Petrochem Ind Res Inst, Guangzhou 510665, Peoples R China

来源：

POLYMER TESTING | 2007年 / 26卷 / 02期

关键词：

polyurethane; photooxidation degradation; UV exposure; titanium dioxide; nanoparticles;

D O I：

10.1016/j.polymertesting.2006.10.002

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Photooxidation of polyurethane (PU) and its composites with anatase and rutile titanium dioxide nanoparticles, induced by ultraviolet exposure was investigated in this work. Anatase was found to be a photosensitiser that accelerates photooxidation of PU, while rutile acted as an effective stabilizer retarding photooxidation of PU. With a rise in the TiO2 nanoparticle content, both photosensitivity of PU/anatase TiO2 nanocomposite and photostability of PU/rutile TiO2 nanocomposite increase. The photocatalytic degradation mechanism of PU and its nanocomposites are briefly discussed. The results are believed to facilitate proper application of TiO2 nanoparticles for different purposes. (C) 2006 Elsevier Ltd. All rights reserved.

引用

页码：202 / 208

页数：7

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