膜科学与技术

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The preparation and characterization of Pebax/SAPO-34 mixed matrix membrane

Authors： Dan Zhao1,2, Jizhong Ren1,*, Li Hui1, Xinxue Li1, Maicun Deng1

Units： 1. National Laboratory for Clean Energy, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian 116023, China

KeyWords： poly(amide-6-b-ethylene oxide); mixed matrix membrane;solvent

ClassificationCode：TQ028.8

year,volume(issue):pagination： 2014,34(5):9-15

Abstract：

Poly (amide-6-b-ethylene oxide) (Pebax1657) and SAPO-34 were used to prepare Pebax1657/SAP-O34 mixed matrix membranes (MMMs) by solution-casting method with 1-butanol and acetic acid as solvent respectively. It was found that the casting solvent had more influence on permeability rather than selectivity. The MMMs prepared with 1-butanol had better zeolite distribution at high zeolite content, but the better membrane-forming was belonged to that prepared with acetic acid. The change of permeability was the co-effect of crystallization, diffusivity tortuosity, mobility of polymer chain and membrane morphology. When acetic acid was used, due to the phase separation, the permeability showed a jump and maximum reached 3 fold of the pristine Pebax membrane, and when 1-butanol was used, except for H2, the permeabilities of other gases increased initially and then decreased as a result of chain rigidification and increased diffusivity tortuosity.

Funds：

863基金资助项目；国家科技支撑项目

AuthorIntro：

赵丹（1987-），女，河南新乡人，博士，从事膜分离技术的研究。

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