Chem. J. Chinese Universities ›› 2018, Vol. 39 ›› Issue (12): 2820.doi: 10.7503/cjcu20180197

• Polymer Chemistry • Previous Articles     Next Articles

Construction of Nanocavity in Membranes Based on Hollow Polymer Microspheres and Effects on Gas Permeation Performance

KANG Changyong1, DING Xiaoli1,*(), ZHAO Hongyong1, WANG Xinlan1, ZHANG Yuzhong1, WANG Lina2   

  1. 1. State Key Laboratory of Separation of Membrane and Membrane Processes,Tianjin Polytechnic University, Tianjin 300387, China
    2. Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116032, China
  • Received:2018-03-13 Online:2018-12-03 Published:2018-09-05
  • Contact: DING Xiaoli E-mail:dingxiaoli@tjpu.edu.cn
  • Supported by:
    † Supported by the National Natural Science Foundation of China(Nos.21506160, 21776217).

Abstract:

Hollow polymer microspheres were prepared by polymerization of tetraethylane and dipentaerythritol hexaacrylate at the oil-water interface of surfactant-free microemulsion using the interfacial initiator. The membranes with nanocavities were formed by casting the hollow microspheres microemulsion and the effects of the nanocavities on the gas permeability and selectivity of the separation membrane were investigated. The results show that the resulting hollow microspheres have an average size of 116.7 nm, and a hollow structure with a shell thickness of 10—20 nm. The permeability of membranes with nanocavities increased significantly compared with the intrinsic permeability of shell material. At 35 ℃, 0.2 MPa, the permeability coefficient of CO2 of hollow microspheres membranes increased by 1.4—5.7 times and the separation coefficient also improved.

Key words: CO2 separation membrane, Hollow polymer microsphere, Microemulsion polymerization, Gas permeation performance, Nanocavity

CLC Number: 

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