超声分散原位聚合法制备纳米TiO_2/聚酯复合材料  

Polyester/Nano-TiO_2 Composite Prepared by In-situ Polymerization via Ultrasonic-dispersion

作　　者：洪范[1] 俞昊[1] 董卫卫[1] 孙宾[1] 朱美芳[1] 

机构地区：[1]东华大学纤维材料改性国家重点实验室,上海201620

出　　处：《东华大学学报（自然科学版）》2009年第5期493-499,共7页Journal of Donghua University(Natural Science)

基　　金：上海纳米专项资助项目(0652nm041);德国Evonik-Degussa公司支持项目

摘　　要：为制得具有抗紫外性的聚酯涂料,通过超声分散制备了TiO2预分散液,研究纳米TiO2在体系中的分散性,并用此分散液原位聚合法合成了纳米TiO2/聚酯复合材料,且制得涂膜.对所制涂膜进行傅里叶变换红外光谱(FT-IR)、扫描电子显微镜(SEM)、扫描探针显微镜(SPM)、紫外可见光谱(UV-VIS)等测试.实验表明,制得的涂膜中纳米粒子分散性好,紫外线屏蔽率达到50%～90%,效果明显.In order to get anti-UV polyester coating,nano-TiO2 particles slurry was prepared by ultrasonic-dispersion at first.Then polyester/nano-TiO2 composite resins and their corresponding polyester/nano-TiO2 composite films were prepared by in-situ polymerization via slurry above.The composite films were investigated by FT-IR,SEM,SPM,ultraviolet-visible spectroscopy（UV-VIS）,respectively.It was found that introduced nano-TiO2 particles were homodisperse in films and could increase UV absorbance of the films.The UV shielding ratio of hybrid film can reach 50%-90%.

关 键 词：纳米TIO2 超声分散 原位聚合 抗紫外 

分 类 号：O634.42[理学—高分子化学]