基于ARGET-ATRP法的TiO2-g-PDEAEM pH敏感杂化材料的研究  

Studyof pH Sensitive Hybrid Material TiO2-g-PDEAEMA based on ARGET-ATRP

作　　者：李继承 李亚卉 刘玲玲 杨金罡 曹颖 刘越 王利平[1] LI Ji-cheng;Li Ya-hui;LIU Ling-ling;YANG Jin-gang;CAO Ying;LIU Yue;WANG Li-ping(College of Materials Science and Engineering,University of Liaocheng,Liaocheng 252000,Shandong)

机构地区：[1]聊城大学材料科学与工程学院

出　　处：《聊城大学学报（自然科学版）》2020年第1期57-62,共6页Journal of Liaocheng University:Natural Science Edition

基　　金：国家自然科学基金项目（51503094）;山东省高等学校科技计划项目（J16LA01）;聊城大学大学生科技文化创新基金项目（26312171917,26312171930）;聊城大学大学生创新训练计划项目（CXCY2017154）资助

摘　　要：以溴代的纳米二氧化钛为引发剂,采用电子转移活化再生催化剂原子自由基聚合(ARGET-ATRP)方法,在纳米二氧化钛表面接枝了聚甲基丙烯酸二乙基氨基乙酯(PDEAEMA)pH敏感聚合物(TiO 2-g-PDEAEMA).通过红外(FT-IR)、热重分析(TGA)、扫描电镜(SEM)、凝胶渗透色谱(GPC)和分散性测试对产物进行了表征与分析.结果表明,TiO 2-g-PDEAEMA杂化材料已成功合成,PDEAEMA在二氧化钛表面的接枝率约为2.04%,溶液中形成的PDEAEMA的数均分子量Mn为9910,分子量分布(PDI)为1.15,分子量分布较窄,对纳米TiO 2的表面改性改变了其在不同溶剂中的分散性,TiO 2-g-PDEAEMA杂化材料在酸性水溶液中具有良好的分散性,而在中性和碱性水溶液中呈现聚集状态,该材料显示出良好的pH敏感性.pH sensitive hybrid material TiO 2-g-PDEAEMA was synthesized via electron transfer activated regeneration catalyst atom transfer radical polymerization(ARGET-ATRP)using brominated nano-titanium dioxide(TiO 2-Br)as initiator.The product was characterized by infrared(FT-IR),thermogravimetric analysis(TGA),scanning electron microscope(SEM),gel permeation chromatography(GPC)and dispersion testing respectively.The results show that TiO 2-g-PDEAEMA hybrid material has been synthesized successfully,and the grafting ratio of PDEAEMA on titanium dioxide surface is about 2.04%.The Mn of PDEAEMA formed in solution is 9910,and the PDI value is 1.15 which is narrow.The surface modification of nano-TiO 2 changes its dispersion in different solvents.TiO 2-g-PDEAEMA hybrid material has good dispersion in acidic aqueous solution,but aggregates in neutral and alkaline aqueous solution,which illustrated TiO 2-g-PDEAEMA has excellent pH sensitivity.

关 键 词：纳米TIO 2 ARGET-ATRP PDEAEMA pH敏感材料 

分 类 号：O648.1[理学—物理化学]