Effect of Temperature-responsive Solution Behavior of PNIPAM-bPPEOMA-b-PNIPAM on Its Inclusion Complexation with α-Cyclodextrin  

作　　者：Jun-jie Xiao Xiu-bing Li 王曦 Chun-wang Yi Sheng-pei Su 

机构地区：[1]The Key Lab for Fine Processing of Resources and Advanced Materials of Hunan Province,Hunan Normal University [2]National & Local Joint Engineering Lab. for New Petro-chemical Materials and Fine Utilization of Resources,Hunan Normal University

出　　处：《Chinese Journal of Polymer Science》2015年第3期456-464,共9页高分子科学（英文版）

基　　金：financially supported by the Hunan Normal University for providing start-up

摘　　要：The effect of temperature-responsive solution behavior of PNIPAM-b-PPEOMA-b-PNIPAM on its inclusion complexation with α-cyclodextrin was studied. The triblock polymer was prepared by reversible addition-fragmentation chain transfer （RAFT） polymerization and formed inclusion complexes （ICs） after selective threading of the PEO segment of the triblock polymer through the cavities of α-CD units. For comparison, PPEOMA homopolymer was prepared and the inclusion complexation with α-CD was also studied. The ICs were prepared with a-CD when the polymer was in different conformations by changing the temperature, and the formed ICs were characterized by XRD, ^1H-NMR, TGA and DSC. The solutions of the ICs show temperature-responsive clear/turbid transition or fluidic emulsion/gel transition depending on the concentration of the α-CD added, and the stoichiometry determined by ^1H-NMR and TGA indicates that the stoichiometry of EO to α-CD of the resulted ICs increases with increasing of temperature.The effect of temperature-responsive solution behavior of PNIPAM-b-PPEOMA-b-PNIPAM on its inclusion complexation with α-cyclodextrin was studied. The triblock polymer was prepared by reversible addition-fragmentation chain transfer （RAFT） polymerization and formed inclusion complexes （ICs） after selective threading of the PEO segment of the triblock polymer through the cavities of α-CD units. For comparison, PPEOMA homopolymer was prepared and the inclusion complexation with α-CD was also studied. The ICs were prepared with a-CD when the polymer was in different conformations by changing the temperature, and the formed ICs were characterized by XRD, ^1H-NMR, TGA and DSC. The solutions of the ICs show temperature-responsive clear/turbid transition or fluidic emulsion/gel transition depending on the concentration of the α-CD added, and the stoichiometry determined by ^1H-NMR and TGA indicates that the stoichiometry of EO to α-CD of the resulted ICs increases with increasing of temperature.

关 键 词：Temperature-responsibility Comblike triblock polymer Inclusion complexes. 

分 类 号：O631[理学—高分子化学]