文献类型：期刊文献

英文题名：Thermoresponsive Diblock Copolymer with Tunable Soluble-Insoluble and Soluble-Insoluble-Soluble Transitions

作者：Han, Xia[1,2];Zhang, Xuxia[1,2];Yin, Quanyi[1,2];Hu, Jun[1,2];Liu, Honglai[1,2];Hu, Ying[1,2]

机构：[1]E China Univ Sci & Technol, Key Lab Adv Mat, Shanghai 200237, Peoples R China;[2]E China Univ Sci & Technol, Dept Chem, Shanghai 200237, Peoples R China

年份：2013

卷号：34

期号：7

起止页码：574

外文期刊名：MACROMOLECULAR RAPID COMMUNICATIONS

收录：;EI(收录号：20131516196200);WOS:【SCI-EXPANDED(收录号:WOS:000317082600004)】；

基金：The authors thank Prof. Virginie Ponsinet for her careful reading and valuable discussion of our manuscript. This work is supported by the National Natural Science Foundation of China (Projects Nos. 21176065, 20990224), the 111 Project of Ministry of Education of China (No. B08021) and the Fundamental Research Funds for the central Universities of China.

语种：英文

外文关键词：lower critical solution temperatures; stimuli-responsive polymers; upper critical solution temperatures

摘要：The thermoresponsive transition behavior of a diblock copolymer consisting of poly(ethylene glycol) methyl ether (mPEG) and poly(N,N-dimethylaminoethyl methacrylate) (PDMAEMA) in aqueous solutions has been investigated. With a specific composition, the copolymer showed a unique tunable phase transition from no response in acidic media to a solubleinsoluble (S-I) transition in neutral media and an S-I-S transition in basic media either in the presence of salt or for salt-free solutions. The S-I-S transition can be tuned over a wide temperature range even to an S-I type transition just by adding salts. In addition, phase transitions can occur in both pure water and saline solution under practical conditions (3080 degrees C), which makes them suitable for a broad range of applications.