화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Macromolecular Research, Vol.22, No.2, 160-164, February, 2014
DOI10.1007/s13233-014-2014-0  Export Citation
Controlling gas permeability of a graft copolymer membrane using solvent vapor treatment
Sung Hoon Ahn, Sang Jin Kim, Dong Kyu Roh, Hyung-Keun Lee [email protected]1, Bumsuk Jung2, †, and Jong Hak Kim†
  • Department of Chemical and Biomolecular Engineering, Yonsei University, Seoul, 120-749, Korea
  • 1Korea Institute of Energy Research, Daejeon, 305-343, Korea
  • 2Department of Environmental Engineering and Energy, Myongji University, Gyeonggi, 499-728, Korea
E-mail:,
A strategy is reported that combines assembled nanostructures and solvent vapor treatment to manipulate the gas permeability of graft copolymer membranes. The VC-g-POEM graft copolymer consists of poly(vinyl chloride) (PVC) main chains and poly(oxyethylene methacrylate) (POEM) side chains, and was synthesized via atom transfer radical polymerization (ATRP). When the PVC-g-POEM membrane was treated with a good solvent vapor such as acetone, the CO2 permeability increased from 107 to 145 Barrer (1 Barrer=10^(-10) cm3(STP)·cm·cm^(-2)·s^(-1)·cmHg^(-1)), which is approximately a 36% improvement compared to an untreated sample. However, the permeability was significantly reduced from 107 to 45 and 38 Barrer upon being treated with a selective (methanol) or poor solvent (hexane). The structure-property relation of the solvent-vapor-treated membranes was investigated using transmission electron microscopy (TEM) and small-angle X-ray scattering (SAXS) analysis.
Keywords:gas permeability;membrane;graft copolymer;morphology;solvent vapor
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