Chem. J. Chinese Universities ›› 2018, Vol. 39 ›› Issue (8): 1823.doi: 10.7503/cjcu20180174

• Polymer Chemistry • Previous Articles     Next Articles

Preparation of Hydrophilic Epoxy Resin and Its Wettability Regulation

QIAN Yihao1, ZHANG Dongjie1, CHENG Zhongjun2,*(), KANG Hongjun1, LIU Yuyan1,*()   

  1. 1. Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage,Ministry of Industry and Information Technology, School of Chemistry and Chemical Engineering,2. Academy of Fundamental and Interdisciplinary Sciences, Harbin Institute of Technology, Harbin 150001, China
  • Received:2018-03-06 Online:2018-08-10 Published:2018-08-10
  • Contact: CHENG Zhongjun,LIU Yuyan E-mail:chengzhongjun@iccas.ac.cn;liuyy@hit.edu.cn
  • Supported by:
    † Supported by the National Natural Science Foundation of China(Nos.51573035, 21674030).

Abstract:

A hydrophilic shape memory epoxy resin was prepared by introducing polyethylene glycol(PEG) into the 4,5-epoxy cyclohexane-1,2-2-phthalate glycidyl ester(TDE-85) epoxy/m-phenylenediamine(MXDA) system, meanwhile, its surface wettability could be controlled by changing its pillar structure under external thermal-stimuli. The result shows that the introduction of PEG effectively increases the hydrophilicity of TDE-85 epoxy resin, and the optimal amount of PEG is 20%(mass fraction). In this condition, the water contact angle is about 54 °, indicating the realization of wetting conversion from the original hydrophobic TDE-85 epoxy resin/MXDA curing system(water contact angle is about 108°) to the hydrophilic TDE-85/MXDA/PEG system. The Tg of the obtained material is 71 ℃, and its shape fixed ratio and recovery ratio are 96.10% and 99.97%, respectively, meaning that the obtained material has a good shape memory property. The micropillars onto the surface by the template method, reversible wetting switching between the hydrophilicity(51°) and the superhydrophilicity(0°) can be realized based on the shape memory ability.

Key words: Epoxy resin, Hydrophilicity, Microstructure, Shape memory, Reversible wetting control, Polyethylene glycol

CLC Number: 

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