原位聚合制备PET/ATO纳米复合材料及其结晶行为  

Preparation and Crystalline Behavior of PET/ATO Nanocomposites Prepared by In-Situ Polymerization

作　　者：陈晓蕾[1] 邵玮[1] 李春忠[1] 

机构地区：[1]华东理工大学材料科学与工程学院超细材料制备与应用教育部重点实验室,上海200237

出　　处：《高校化学工程学报》2007年第2期334-340,共7页Journal of Chemical Engineering of Chinese Universities

基　　金：国家自然科学基金重点项目(20236020);上海市基础研究重大项目(04DZ14002);上海市重点实验室专项基金(04DZ05622;05DZ22302);上海市纳米科技基金项目(0452nm001;0452nm047;05nm05001)等资助

摘　　要：将锑掺杂二氧化锡(ATO)纳米颗粒均匀分散于乙二醇(EG)介质中,通过EG与对苯二甲酸(TPA)原位聚合制备了聚对苯二甲酸乙二酯(PET)/ATO纳米复合材料。利用SEM、DSC、XRD、FTIR和TGA等方法,研究了ATO在PET基体中的分散性、PET/ATO复合材料的结晶行为和热性能。利用原位聚合制备的PET/ATO复合材料,ATO颗粒在PET基体中分散均匀,尺寸100～150nm,纳米ATO颗粒的加入导致PET的特性粘数增大。在PET基体中,纳米ATO颗粒起到异相成核的作用,提高了PET的结晶速率和结晶度,减小了PET的晶粒尺寸,同时也使PET热稳定性提高。随着ATO含量增加,熔融纺丝得到的PET纤维的电阻下降。加入1%ATO的PET纤维的体积电阻率为4.9×109Ω·cm,具有很好的抗静电效果。Poly（ethylene terephathalate） / antimony doped tin oxide （PET/ATO） nanocomposites were prepared by means of esterization and condensation reactions of terephathalic acid and ethyl glycol in the presence of ATO nanoparticles. The dispersion of ATO in PET matrix and the effects of ATO on the intrinsic viscosity of PET, the crystallization and thermal behavior of PET were investigated by SEM, DSC, XRD, FTIR and TGA. It was found that ATO nanoparticles are well dispersed in the PET matrix, and the introduction of ATO increases the intrinsic viscosity of PET nanocomposites. ATO nanoparticles behave as the nucleating agent. Compared with the neat PET, adding ATO nanoparticles, the crystallization rate and crystallization temperature of the PET nanocomposites increase, in addition, the crystallinity of the nanocomposites also increases and their crystallite size decreases. The thermal stability of the nanocomposites is slightly enhanced by the addition of ATO nanoparticles. The specific resistance of the fibers prepared by the PET/ATO nanocomposites （with 1 wt% of ATO） is about 4.9×10^9Ω·cm, which is much lower than that of the neat PET fibers （about 2.7×10^13Ω·cm）, and the hybrid fibers show a better anti-static property.

关 键 词：聚对苯二甲酸二乙酯 ATO 原位聚合 结晶 抗静电 纳米复合材料 

分 类 号：TQ342.21[化学工程—化纤工业] TQ340.471