A novel positively thermo-sensitive hydrogel based on ethylenediaminetetraacetic dianhydride and piperazine:Design,synthesis and characterization

作     者：Jiao Xia Sun Yuan Liang Wang Shu Hua Dou 

作者机构：Key Lab of Biorheological Science and TechnologyMinistry of EducationResearch Center of BioinspiredMaterial Science and EngineeringCollege of BioengineeringChongqing UniversityChongqing 400030China 

基　　金：supported by the National Natural Science Foundation of China(No.30870609) 

出 版 物：《Chinese Chemical Letters》 (中国化学快报（英文版）)

年 卷 期：2012年第23卷第1期

页      码：97-100页

摘      要：A new positively thermo-sensitive hydrogel was designed and synthesized by a condensation polymerization reaction of ethylenediaminetetraacetic dianhydride（EDTAD） and piperazine（PA） to give poly（ethylenediaminetetraacetic dianhydride-copiperazine） （PEP）.The obtained polymers＇ structure was characterized by FTIR and ^（13）C *** backbone of the polymer linked by amide bond and abundant of carboxyl groups as pendant group could form strong intermolecular and intramolecular hydrogen bond at lower temperature and dissociate at higher temperature,resulting in the polymer with *** aqueous solution of PEP at lower temperature（〈20℃） showed micro-gel formation and transformed to transparent solution at higher temperature（〉40℃）.Transition temperature shifted to higher value with the increasing of *** hydrogel exhibited reversible phase transition and the transmittance change was not weakened by multiple temperature changes.

主 题 词：Positively thermo sensitive hydrogel Degradation Ethylenediaminetetraacetic dianhydride Piperazine 

学科分类：081702[081702] 081704[081704] 07[理学] 070304[070304] 08[工学] 0817[工学-轻工类] 0703[理学-化学类] 

核心收录：

D　O　I：10.1016/j.cclet.2011.09.023

馆 藏 号：203288145...