화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Polymer(Korea), Vol.23, No.6, 800-808, November, 1999
Export Citation
전지용 고성능 Poly(vinylidene fluoride)계 불소수지 중합연구(I)
A Study on Polymerization of PVDF Based Fluoropolymers with High Performance for Battery(Ⅰ)
조성무†, 이화섭, 오현주1, 박성1, 안병성1, 박건유1
  • 한국과학기술연구원 고분자하이브리드연구센터
  • 1CFC 대체연구센터
Seong Mu Jo†, Wha Seop Lee, Hyun Ju Oh1, Seong Park1, Byeung Sung Ahn1, and Kun You Park1
  • Polymer Hybrid Research Center, Korea Institute of Science & Technology, P.O. Box 131 Cheongryang, Seoul 136-791, Korea
  • 1CFC Alternatives Research Center, P.O. Box 131 Cheongryang, Seoul 136-791, Korea
E-mail:
초록
Di-t-butyl peroxide (DTBP)를 개시제로 사용하여 제조된 poly(vinylidene fluoride)(PVDF)는 고온중합 특성 때문에 결정화도와 융점이 낮고, head-to-head 반전 함량이 높았다. 결정구조는 α-형(Phase Ⅱ)이었으며, 비극성 말단기가 중합체에 도입되었기 때문에 열화학적 안정성은 좋았다. Ammonium peroxodisulfate (APS)를 사용하여 제조된 PVDF는 저온중합 특성 때문에 융점과 결정화도가 높고 head-to-head 반전 함량이 낮았다. 결정구조는 β-형(Phase Ⅰ)의 함량이 높았으며, 중합온도가 높을수록 α-형의 함량이 증가하였다. 그러나, 낮은 head-to-head 반전 함량 및 극성 말단기 때문에 열화학적 안정성은 매우 열악하였다.
Poly(vinylidene fluoride)s (PVDFs), which were [p;umerized by 야-t-butyl peroxide(DTBP), an initiator, at high temperature, showed low melting temperature, low crystallinity, and high contents of head-to-head inversion. The main crystal structure was α-form(Phase Ⅱ) and it showed good thermochemical stability due to their nonpolar end group. PVDF by ammonium peroxodisulfate (APS) showed higher melting temperature, higher crystallinity, and lower contents of head-to-head inversion than those by DTBP. The main crystal structures were β-form (Phase Ⅰ), but the content of α-form increased at high polymerization temperature. It also showed poor thermochemical stability because of their polar end group and low contents of head-to-head inversion.
Keywords:poly(vinylidene fluoride);DTBP;APS;end group;thermochemical stability
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