Synthesis and self-assembly behavior of thermoresponsive triblock copolymer

被引：4
|
作者：
Yu, Yueqin [1 ]
Li, Suhua [1 ]
Leng, Caifeng [1 ]
Xiong, Taizai [1 ]
Yuan, Kunshan [1 ]
Yan, Shaopeng [1 ]
Jia, Fuqiang [1 ]
机构：
[1] Qingdao Univ Sci & Technol, Coll Chem & Mol Engn, Key Lab Ecochem Engn, Minist Educ, Qingdao 266042, Peoples R China
来源：
POLYMER SCIENCE SERIES B | 2014年 / 56卷 / 02期
基金：
中国国家自然科学基金;
关键词：
CROSS-LINKED MICELLES; RADICAL POLYMERIZATION; BLOCK-COPOLYMERS; RAFT SYNTHESIS; AQUEOUS-MEDIA; CORE;
D O I：
10.1134/S1560090414020183
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
Block copolymers comprising thermosensitive poly(N-isopropylacrylamide) (PNIPAM) and hydrophobic poly(n-butyl acrylate) (PBA) blocks, were synthesized using the reversible addition-fragmentation chain transfer polymerization (RAFT), their thermosensitive behavior was studied by ultraviolet spectrophotometer (UV) and dynamic light scattering (DLS). The lower critical solution temperature (LCST) was strongly correlated to the hydrophobic/hydrophilic ratio of the copolymers. Their micellization and self-assembly behavior in dilute aqueous solution were studied by surface tension (SFT), DLS and TEM. The resulting block copolymers reversibly formed or deformed micellar assemblies during their LCSTs. The critical micelle concentration (CMC) was controlled by the composition of PBA and PNIPAM, indicating the successful formation of the block copolymers.
引用
收藏
页码：191 / 197
页数：7
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