화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Polymer(Korea), Vol.37, No.1, 74-79, January, 2013
Export Citation
비닐리덴 플루오라이드와 헥사플루오르프로필렌 공중합체의 합성
Synthesis of Poly(vinylidene fluoride-co-hexafluoropropylene)
이상구1, 2, 하종욱1, 박인준1, †, 이수복1, 이종대2
  • 1한국화학연구원 그린화학연구단
  • 2충북대학교 화학공학과
Sang Goo Lee1, 2, Jong-Wook Ha1, In Jun Park1, †, Soo-Bok Lee1, and Jong Dae Lee2
  • 1Division of Green Chemistry, Korea Research Institute of Chemical Technology, Yuseong, Daejeon 305-343, Korea
  • 2Department of Chemical Engineering, Chungbuk National University, Cheongju, Chungbuk 361-763, Korea
E-mail:
초록
Polyvinylidene fluoride(PVDF)와 다양한 조성을 갖는 P(VDF-co-HFP)를 개시제 diisopropyl peroxidicarbonate(DIPPDC)와 용매 R-113을 사용하는 용액중합방법을 통해 성공적으로 합성하였다. 공중합의 VDF와 hexafluoropropylene(HFP)의 반응성 비는 rVDF=2.06±0.03과 rHFP∼0으로 확인되었다. 이결과는 HFP의 자가 사슬성장이 거의 일어나지 않는다는 것을 의미한다. 고분자의 중량평균 분자량 및 분포도는 HFP 함량이 증가할수록 점차적으로 감소하는 경향성을 보였다. 고분자의 녹는점은 HFP 함량이 증가할수록 결정화를 방해하기 때문에 선형적으로 낮아지는 경향성을 나타내었다. 더욱이 높은 HFP 함량에서는 녹는점이 발견되지 않았다. 고분자의 유리전이 온도의 경우, HFP 함량이 증가할수록 고분자사슬의 유동성을 감소시켜 점차적으로 상승하였다.
Polyvinylidene fluoride (PVDF) and its copolymer with hexafluoropropylene (HFP) were successfully prepared from free radical solution polymerizations using diisopropyl peroxidicarbonate (DIPPDC) in the presence of 1,1,2-trichlorotrifluoroethane (R-113). The reactivity ratios of VDF and HFP were estimated as rVDF=2.06±0.03 and rHFP.0. This result indicates that HFP cannot undergo self propagation. The weight-average molecular weight and molecular weight distribution of copolymers were found to decrease with increasing HFP content. The melting temperature of copolymers linearly decreased with the increase of HFP content because of the introduction of HFP. Moreover, no melting peak was observed for the copolymers with high HFP content. The glass transition temperature of copolymers gradually increased with the increase of HFP content due to the restricted flexibility of the polymer chains.
Keywords:vinylidene fluoride;hexafluoropropylene;copolymerization;reactivity ratios.
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