화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Journal of Industrial and Engineering Chemistry, Vol.14, No.1, 116-119, January, 2008
DOI10.1016/j.jiec.2007.08.005  Export Citation
Preparation of polystyrene-grafted poly(vinylidene fluoride) membranes for lithium secondary batteries
Jae-Hak Choi1, Sung-Jin Gwon1, 2, Joon-Yong Shon1, Chan-Hee Jung1, Young-Eon Ihm2, Youn-Mook Lim1, and Young-Chang Nho1, †
  • 1Advanced Radiation Technology Institute, Korea Atomic Energy Research Institute, Jeongeup-si, Jeollabuk-do 580-185, Korea
  • 2Department of Materials Engineering, Chungnam National University, Yuseong-gu, Daejeon 305-764, Korea
E-mail:
Polystyrene-grafted poly(vinylidene fluoride) (PVDF-g-PS) membranes were prepared by simultaneous gamma-irradiation gamma-induced graft polymerization. The morphological changes of the prepared membranes were investigated by scanning electron microscopy. The degree of grafting (DOG) increased with increasing absorption doses. The degree of crystallinity upon grafting was found to decrease due to the formation of amorphous polystyrene layer. The grafted membranes showed better electrolyte uptake and retention ability compared to the ungrafted membrane. The ionic conductivity of the membrane with LiClO4/gamma-butyrolactone-based electrolyte increased with the increase in the DOG and reached 2.50 mS/cm for the highest sample. (c) 2007 The Korean Society of Industrial and Engineering Chemistry. Published by Elsevier B.V. All rights reserved.
Keywords:radiation;membrane;poly(vinylidene fluoride);lithium battery
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