Partial pore blockage and polymer chain rigidification phenomena in PEO/ZIF-8 mixed matrix membranes synthesized by in situ polymerization

Xiaoli Ding; Xu Li; Hongyong Zhao; Ran Wang; Runqing Zhao; Hong Li; Yuzhong Zhang

doi:10.1016/j.cjche.2017.07.017

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Partial pore blockage and polymer chain rigidification phenomena in PEO/ZIF-8 mixed matrix membranes synthesized by in situ polymerization

Separation Science and Engineering | Updated：2026-01-06

- Partial pore blockage and polymer chain rigidification phenomena in PEO/ZIF-8 mixed matrix membranes synthesized by in situ polymerization
- Chinese Journal of Chemical Engineering Vol. 26, Issue 3, Pages: 501-508(2018)
- Affiliations：
  
  1. 2 Tianjin Key Laboratory of Hollow Fiber Membrane Materials and Processes, Tianjin Polytechnic University,Tianjin,China,300387
  2. 3 Institute of Separation Material and Process Control, School of Material Science and Engineering, Tianjin Polytechnic University,Tianjin,China,300387
  3. 4 School of Environmental and Chemical Engineering, Tianjin Polytechnic University,Tianjin,China,300387
- Author bio：
- Funds：
- DOI：10.1016/j.cjche.2017.07.017
  CLC：
- Published：2018
- Accepted：
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polymerization[J]. Chinese Journal of Chemical Engineering, 2018, 26(3): 501-508.
DOI：

polymerization[J]. Chinese Journal of Chemical Engineering, 2018, 26(3): 501-508. DOI： 10.1016/j.cjche.2017.07.017.

摘要

Abstract

Nanostructured zeolitic imidazolate frameworks (ZIF-8) was incorporated into the mixture of poly (ethylene glycol) methyl ether acrylate (PEGMEA) and pentaerythritol triacrylate (PETA) to synthesize mixed matrix membranes (MMMs) by in situ polymerization for CO

/CH

separation. The solvent-free polymerization between PEGMEA and PETA was induced by UV light with 1-hydroxylcyclohexyl phenyl ketone as initiator. The chemical structural characterization was performed by Fourier transform infrared spectroscopy. The morphology was characterized by scanning electron microscope. The average chain-to-chain distance of the polymer chains in MMMs was investigated by X-ray diffraction. The thermal property was evaluated by differential scanning calorimetry. The CH

and CO

gas transport properties of MMMs are reported. The relationship between gas permeation-separation performances or physical properties and ZIF-8 loading is also discussed. However

the permeation-separation performance was not improved in Robeson upper bound plot compared with original polymer membrane as predicted. The significant partial pore blockag

e and polymer rigidification effect around the ZIFs confirmed by the increase in glass temperature and the decrease in the d-spacing

were mainly responsible for the failure in performance improvement

which offset the high diffusion induced by porous ZIF-8.

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