Chem. J. Chinese Universities ›› 2023, Vol. 44 ›› Issue (8): 20230192.doi: 10.7503/cjcu20230192

• Polymer Chemistry • Previous Articles    

Environmental Responsive Adhesion Behavior of Metal Ion Crosslinked Thermosensitive Double Network Hydrogel

CHEN Shunlan1, XU Danni1, LI Xuefeng2,3(), PENG Gege1, HUANG Yiwan1,3, LONG Shijun1,3, ZHANG Gaowen1,3   

  1. 1.School of Materials and Chemical Engineering,Hubei University of Technology,Wuhan 430068,China
    2.Hubei Longzhong Laboratory,Xiangyang 441000,China
    3.Hubei Key Laboratory of Green Light Industry Materials,Hubei University of Technology,Wuhan 430068,China
  • Received:2023-04-18 Online:2023-08-10 Published:2023-06-08
  • Contact: LI Xuefeng E-mail:li_xf@hbut.edu.cn
  • Supported by:
    the National Natural Science Foundation of China(52073083);the Independent Innovation Projects of the Hubei Longzhong Laboratory, China(2022ZZ-16)

Abstract:

A thermally responsive double-network hydrogel(TDN) with environmental response adhesion was prepared by the “one-pot method”, and it was found that TDN87.5 hydrogel had the best shear bond strength(26.53 kPa). Further introducing metal ion coordination crosslinking TDN87.5 thermal hydrogels with multiple valence states, it was found that the tensile strength increased by more than 1 times(from 172.46 kPa of TDN87.5 hydrogel to 373.72 kPa of TDN87.5-Zr hydrogel), and the corresponding shear bond strength increased by about 16 times(from 26.53 kPa to 447.29 kPa). Furthermore, by adjusting the concentration, time and temperature of soaking Zr4+, a TDN87.5-Zr0.3@90 ℃ hydrogel with the best shear adhesion strength(552.62 kPa) was obtained, and the principle of regulating the adhesion behavior of TDN thermal hydrogel by multiple methods was discussed, which provided a new idea for the development of a new hydrogel with high strength, high interfacial adhesion performance and controllable shape deformation.

Key words: Heat-sensitive hydrogel, Metal ion coordination, Adhesion property, Environmental responsiveness

CLC Number: 

TrendMD: