• Title/Summary/Keyword: poly(imide siloxane)

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Development of high permeable $C-SiO_2$membranes derived from poly (imide siloxane) / PVP blends (폴리 이미드 실록산과 PVP 혼합물로부터 유도된 고 투과성 $C-SiO_2$ 막의 개발)

  • Lee, Ji-Min;Kim, Youn-Kook;Park, Ho-Bum;Lee, Young-Moo
    • Proceedings of the Membrane Society of Korea Conference
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    • 2004.05b
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    • pp.188-191
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    • 2004
  • Carbon molecular sieve (CMS) membranes have superior gas permeation and separation performance compared with polymeric membranes$^{1.3}$ . Up to now, CMS membranes mostly have been mostly focused on the kinds of precursor and pyrolysis condition (pyrolysis temperature, heating rate, pyrolysis atmosphere).(omitted)

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Study on the Pervaporation Seperation of Aqueous 1-Butanol Mixture Using Composite PEI/PDMS Membrane (1-Butanol / 물 혼합액의 PEI/PDMS 복합막 모듈을 이용한 투과증발 파일럿 분리특성)

  • Cheon, Bong su;Lee, Choong Sub;Ha, Sung Yong;Rhim, Ji Won
    • Membrane Journal
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    • v.25 no.4
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    • pp.352-357
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    • 2015
  • To determine the pervaporation separation characteristics of 1-butanol/water mixtures, PEI/PDMS hollow fiber membrane module commercialized by Airrane Co. was subjected to both lab and pilot tests. The 1% 1-butanol of 1-butanol/water feed mixture was used. The flux of $133g/m^2hr$ and separation factor of 23.4 at $30^{\circ}C$ were obtained whereas the $505g/m^2hr$ and 5.1 were measured at $50^{\circ}C$. When compared with the performance of the hollow fiber PDMS membrane by Nagasep Co., the higher flux of $10{\sim}20g/m^2hr$ was obtained by the module of Airrane Co. In order to realized the durability of Airrane Co. module, the long-term test of 35 days has been conducted and as a result, the flux $510{\sim}520g/m^2hr$ and separation factor 20~25 were maintained with the initial values.