pH-responsive pseudorotaxane between comblike PEO-grafted triblock polymer and α-cyclodextrin

被引：3
|
作者：
Li, Xiubing [1 ]
Xiao, Junjie [1 ]
Wang, Xi [1 ]
Yi, Chunwang [1 ]
Su, Shengpei [1 ]
机构：
[1] Hunan Normal Univ, Coll Chem & Chem Engn, Key Lab Fine Proc Resources & Adv Mat Hunan Prov, Changsha 410081, Hunan, Peoples R China
来源：
COLLOID AND POLYMER SCIENCE | 2014年 / 292卷 / 12期
关键词：
pH responsibility; Comblike triblock polymer; Reversible addition-fragmentation chain transfer polymerization; Inclusion complexes; HYDROPHILIC BLOCK-COPOLYMER; INCLUSION COMPLEX-FORMATION; SOL-GEL TRANSITION; POLY(ETHYLENE GLYCOL); SUPRAMOLECULAR HYDROGELS; AQUEOUS-SOLUTION; POLYROTAXANES; NECKLACE; DELIVERY;
D O I：
10.1007/s00396-014-3265-1
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
The pH-responsive inclusion complexation of comblike triblock polymer, P2VP-b-PPEOMA-b-P2VP, with alpha-cyclodextrin (alpha-CD) was studied. The triblock polymer was prepared by reversible addition-fragmentation chain transfer polymerization (RAFT) and formed inclusion complexes (ICs) after selective threading of the PEO segment of the triblock polymer through the cavities of alpha-CD units. For comparison, PPEOMA homopolymer was prepared, and the inclusion complexation with alpha-CD was also studied. The formed ICs were characterized by XRD and H-1 NMR. The results revealed that P2VP-b-PPEOMA-b-P2VP can form ICs with alpha-CD even when forming micelles, and the introduction of P2VP had a great influence on the solution property and the stoichiometry of EO to CD of the inclusion complexes depending on the concentration and the pH of the solution.
引用
收藏
页码：3243 / 3249
页数：7
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