期刊
CHEMICAL ENGINEERING & TECHNOLOGY
卷 42, 期 3, 页码 645-654出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/ceat.201800111
关键词
Binary gas mixture; CO2 separation; Matrimid; polyethylene glycol; steady state
资金
- European Commission - Education, Audiovisual and Culture Executive Agency (EACEA) [2011-0014]
- University of Chemistry and Technology of Prague (MSTM) [20-SVV/2016]
- Operational Program Prague - Competitiveness [CZ.2.16/3.1.00/24501]
- National Program of Sustainability [NPU I LO1613-MSMT-43760/2015]
The effect of CO2-philic additive polyethylene glycol (PEG) 200 in Matrimid 5218 on the separation performance of prepared membranes was evaluated in a binary gas mixture. Matrimid/PEG 200 flat-sheet blended membranes with low PEG concentrations were prepared by the dense film-casting method. Pure Matrimid and blended membranes were characterized by FTIR spectroscopy, scanning electron microscopy, differential scanning calorimetry, thermogravimetric analysis, and permeation measurements. The addition of 4-5 % of PEG enhanced considerably the CO2 permeability of the Matrimid matrix. The best formulation, Matrimid/PEG 200 (96/4), showed in comparison to pure Matrimid a more than threefold increase in CO2 permeability and an increase in separation factor of about 40 %.
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