Chem. J. Chinese Universities ›› 2021, Vol. 42 ›› Issue (3): 894.doi: 10.7503/cjcu20200549

• Polymer Chemistry • Previous Articles     Next Articles

Fabrication of Superwetting Porous Shape Memory Sponge and Its Application in Oil-water Separation

LIU Pengchang, LAI Hua, CHENG Zhongjun(), LIU Yuyan   

  1. School of Chemistry and Chemical Engineering,Harbin Institute of Technology,Harbin 150001,China
  • Received:2020-08-10 Online:2021-03-10 Published:2021-03-08
  • Contact: CHENG Zhongjun E-mail:chengzhongjun@iccas.ac.cn
  • Supported by:
    ? Supported by the National Natural Science Foundation of China(21674030)

Abstract:

Owing to the shape memory properties of trans-1,4-polyisoprene(TPI), TPI was coated onto the Polyurethane(PU) sponge to fabricate a hydrophobic and superoleophilic porous shape memory sponge. As the shape of the porous sponge was repeatedly pressed/recovered based on the good shape memory property, the pore size of the sponge could be controlled from about 450 nm to about 875 μm. Based on the superwetting performances and tunable pore size, the sponge was further applied in oil-water separation. Experimental results indicate that larger pore size was favorable for fast separation of immiscible oil-water mixture, and the small pore size was effective to realize the separation of emulsions, finally achieving the separation of different oil-water mixtures on the same material.

Key words: Shape memory polymer, Porous material, Tunable pore size, Oil-water separation

CLC Number: 

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