KANG, YS SHIN, EM JUNG, B KIM, JJ 2024-01-21T21:35:00Z 2024-01-21T21:35:00Z 2021-09-02 1994-07-18 0021-8995 https://pubs.kist.re.kr/handle/201004/145539 A poly(1-trimethylsilyl-1-propyne) (PTMSP) membrane was systematically modified to prevent flux decline over time by incorporating poly (dimethyl siloxane) (PDMS) in three different ways: (1) semi-interpenetrating polymer network (I series), (2) PDMS sorption (S series), and (3) PDMS sorption and crosslinking (X series). The PTMSP and PDMS phases were partially mixed in the I series, which was confirmed by the measurement of density and glass transition temperature. The flux and separation factor in pervaporation of an ethanol-water mixture decrease with time for the I series, analogous to the behavior of pure PTMSP. However, the flux and separation factor remained steady with time in the case of the S and X series. The sorption method appears to be a good means for maintaining a time-unvarying flux and separation factor at a minimum expense. (C) 1994 John Wiley & Sons, Inc. English JOHN WILEY & SONS INC SUBSTITUTED-POLYACETYLENE MEMBRANES CHEMICAL MODIFICATION GRAFT COPOLYMER POLY(SUBSTITUTED-ACETYLENE) SORPTION GAS POLY<1-(TRIMETHYLSILYL)-1-PROPYNE> PERMEABILITY SEPARATION PERMEATION COMPOSITE MEMBRANES OF POLY(1-TRIMETHYLSILYL-1-PROPYNE) AND POLY(DIMETHYL SILOXANE) AND THEIR PERVAPORATION PROPERTIES FOR ETHANOL-WATER MIXTURE Article 10.1002/app.1994.070530308 1 JOURNAL OF APPLIED POLYMER SCIENCE, v.53, no.3, pp.317 - 323 JOURNAL OF APPLIED POLYMER SCIENCE 53 3 317 323 scie scopus A1994NT46600008 2-s2.0-0028464557 Polymer Science Polymer Science Article SUBSTITUTED-POLYACETYLENE MEMBRANES CHEMICAL MODIFICATION GRAFT COPOLYMER POLY(SUBSTITUTED-ACETYLENE) SORPTION GAS POLY<1-(TRIMETHYLSILYL)-1-PROPYNE> PERMEABILITY SEPARATION PERMEATION Composite Membranes PTMSP/PDMS Pervaporation Ethanol-water Separation