Article
  • A Study on Polymerization of PVDF Based Fluoropolymers with High Performance for Battery(Ⅰ)
  • Jo SM, Lee WS, Oh HJ, Park S, Ahn BS, Park KY
  • 전지용 고성능 Poly(vinylidene fluoride)계 불소수지 중합연구(I)
  • 조성무, 이화섭, 오현주, 박성, 안병성, 박견유
Abstract
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.

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.

Keywords: poly(vinylidene fluoride); DTBP; APS; end group; thermochemical stability

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  • Polymer(Korea) 폴리머
  • Frequency : Bimonthly(odd)
    ISSN 0379-153X(Print)
    ISSN 2234-8077(Online)
    Abbr. Polym. Korea
  • 2022 Impact Factor : 0.4
  • Indexed in SCIE

This Article

  • 1999; 23(6): 800-808

    Published online Nov 25, 1999