A high strength pH responsive supramolecular copolymer hydrogel

查看全文 作　　者：WANG [1]Qing;ZHANG [1]YinYu;DAI [1]XiYang;SHI [1]XiaoHuan;LIU [1]WenGuang

机构地区：[1]School of Materials Science and Engineering, Tianjin Key Laboratory of Composite and Functional Materials Tianjin University, Tianjin 300354, China

出　　处：《Science China(Technological Sciences)》索引2017年第60卷第1期,共6页

基　　金：supported by the National Natural Science Foundation of China(Grant No.51325305);National Key Research and Development Program(GrantNo.2016YFC1101301);Tianjin Municipal Natural Science Foundation(Grant Nos.13ZCZDSY00900,15JCZDJC38000) 摘　　要：Constructing high strength pH sensitive supramolecular polymer hydrogel remains very challenging due to the unavoidable network swelling caused by ionization of acid or basic groups at a specified pH.In this work,we proposed a simple and very convenient approach to fabricate high strength pH responsive supramolecular polymer(SP) hydrogels by one-pot copolymerization of N-acryloyl glycinamide(NAGA) and 2-vinyl-4,6-diamino-1,3,5-triazine(VDT),two feature hydrogen bonding monomers.In these PNAGA-PVDT SP hydrogels obtained,the hydrogen bonding of NAGA was shown to play a dominant role in reinforcing strength,while the hydrogen bonding of diaminotriazine served as a pH sensitive moiety.At pH 3,the mechanical properties of PNAGA-PVDT hydrogels decreased to a different extent due to the breakup of hydrogen bonding;in contrast,the hydrogel resumed the original strength while pH was raised to 7.4 because of reconstruction of hydrogen bonding.Over the selected pH range,the PNAGA-PVDT hydrogels exhibited up to 1.25 MPa tensile strength,845% breaking strain,69 kPa Young's modulus and 21 MPa compressive strength.This novel high strength pH-responsive SP hydrogels may find applications in biomedical and industrial fields. 关键词：超分子聚合物共聚水凝胶 PH响应性高强度共聚物 pH敏感丙烯酰基钢筋强度

相关文献

参考文献（32）
引证文献（6）
耦合文献（20）

参考文献(32)

引证文献(6)

耦合文献(20)

互联网出版许可证新出网证(渝)字10号全国400电话 - 免长途话费

A high strength pH responsive supramolecular copolymer hydrogel

参考文献(32)

引证文献(6)

耦合文献(20)

用户提示