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The Membrane Society of Korea (한국막학회)
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Study of Thermally Induced Phase Separation of Polyvinylidene Fluoride-Silica Mixture for the Preparation of Porous Polymeric Membrane

다공성 분리막 제조를 위한 폴리플루오르화비닐리덴-실리카 혼합물의 열유도상분리 연구

  • Kim, Se Jong (Department of Materials Engineering and Convergence Technology, Engineering Research Institute, Gyeongsang National University) ;
  • Lee, Jeong Woo (Department of Materials Engineering and Convergence Technology, Engineering Research Institute, Gyeongsang National University) ;
  • Nam, Sang Yong (Department of Materials Engineering and Convergence Technology, Engineering Research Institute, Gyeongsang National University)
  • 김세종 (경상대학교 나노신소재융합공학과 공학연구원) ;
  • 이정우 (경상대학교 나노신소재융합공학과 공학연구원) ;
  • 남상용 (경상대학교 나노신소재융합공학과 공학연구원)
  • Received : 2017.04.26
  • Accepted : 2017.04.28
  • Published : 2017.04.30
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Abstract

In this study, we used thermally induced phase separation (TIPS) to produce water treatment membrane and poly(vinylidene fluoride) (PVDF), silica with excellent mechanical properties and chemical resistance to evaluate characterization of the membrane. The diluents used for the characterization were dioctyl phthalate (DOP) and dibutyl phthalate (DBP). We observed the crystallization temperature, cloud point and SEM images to see the manufacture conditions according to the ratio of PVDF and silica. The crystallization temperature and cloud point increased with the contents of silica. Through the phase diagram drawn from these results, the conditions for the preparation of the membrane confirmed.

본 연구는 수처리 분리막에 제조하기 위하여 열유도 상분리법(thermally induced phase separation, TIPS)을 이용하였고, 기계적 물성과 내화학성이 우수한 폴리플루오르화비닐리덴(poly(vinylidene fluoride)(PVDF)) 고분자와 실리카를 이용하여 특성평가를 진행하였다. 특성평가에 사용된 희석제는 dioctyl phthalate (DOP), dibutyl phthalate (DBP)를 사용하였으며, PVDF와 실리카의 비율에 따른 분리막 제조 조건을 알아보기 위하여 결정화 온도, 흐림점, SEM 이미지 등을 관찰하였다. 실리카의 함량이 증가할수록 결정화 온도와 흐림점이 증가하였음을 확인하였고, 상평형도 작도를 통하여 분리막 제조 조건을 확인하였다.

Keywords

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