基于TiO_2/SiO_2溶胶的新型PET缩聚催化剂的合成  

Synthesis of Novel Catalyst Based on TiO_2/SiO_2 for Poly(ethylene terephthalate)

作　　者：殷明[1,2] 冯润财[1,2] 李春成[1] 管国虎[1] 张栋[1] 萧耀南[1] 

机构地区：[1]北京分子科学国家实验室,中国科学院化学研究所,工程塑料重点实验室,北京100190 [2]中国科学院研究生院,北京100049

出　　处：《高等学校化学学报》2010年第2期418-420,共3页Chemical Journal of Chinese Universities

基　　金：国家“九七三”计划项目(批准号:2003CB615600)资助

摘　　要：合成了一种基于TiO2/SiO2溶胶的高活性PET缩聚催化剂,用电子探针显微镜(EPMA)和热重分析(TGA)表征了催化剂的组分,结果与理论值符合.X射线光电子能谱(XPS)结果证实,催化剂中加入的己内酰胺与Ti存在配位作用,极大地提高了催化剂的活性.所制备的催化剂催化聚合得到的PET性能远优于用传统锑系催化剂制备的PET材料.A novel catalyst for the polycondensation of PET based on TiO2/SiO2 sol was synthesized.The composition of the catalysts was characterized by electron probe micro-analyzer（EPMA） and thermogravimetric analysis（TGA） methods.The results indicate that the composition of the catalysts can be well controlled and match well with theoretical values.X-ray photoelectron spectroscopy（XPS） results reveale that caprolactam added into the catalyst has coordinative effects with Ti and gives the catalyst ultra-high activity.The PET products catalyzed by the catalyst with caprolactam had far better properties than those synthesized using traditional antimony based catalysts.

关 键 词：TiO2/SiO2溶胶 聚对苯二甲酸乙二酯 催化剂 

分 类 号：O631.5[理学—高分子化学]