화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Polymer(Korea), Vol.37, No.1, 80-85, January, 2013
Export Citation
헥사플루오르프로필렌 올리고머를 사용한 헥사플루오르프로필렌 옥사이드의 음이온 중합
Anionic Polymerization of Hexafluoropropylene Oxide Using Hexafluoropropylene Oligomer
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, Chungbuk 361-763, Korea
E-mail:
초록
Hexafluoropropylene(HFP) dimer와 trimer로 구성된 올리고머의 조성비, 반응온도 그리고 hexafluoropropylene oxide(HFPO) 투입속도가 HFPO 음이온 중합반응에 미치는 영향 등을 알아보았다. HFP 올리고머는 불화금속 CsF와 TG를 사용한 음이온 반응을 통해 합성하였고, CsF 5 g, TG 10 g 그리고 반응온도 0 ℃에서 합성된 HFP 올리고머의 dimer 함량은 상대적으로 높은 35.1%를 나타내었다. HFPO 음이온 중합의 경우, 반응온도 0 ℃, HFP dimer 35.1%를 포함하고 있는 올리고머와 HFPO 투입속도 1.85 g/min에서 Cs(HFPO)n 알콕사이드는 상대적으로 원활한 사슬성장을 하면서 중량평균 분자량 3600을 나타내었다. 반면, 반응온도 10 ℃ 및 증가된 HFPO 투입속도에서는 알콕사이드의 Fδ-의 이탈현상을 촉진시켜 중평균 분자량은 감소되었다. 결론적으로, HFP 올리고머를 용매로 사용한 HFPO 음이온 중합반응의 사슬성장 및 사슬전이는 용매의 조성, 반응온도 및 단량체의 투입속도에 영향을 받고 있음을 알 수 있었다.
Anionic polymerization of hexafluoropropylene oxide (HFPO) was investigated under various reaction conditions such as various hexafluoropropylene (HFP) oligomers composed of dimer and trimer, reaction temperatures, and feeding rates of hexafluoropropylene oxide monomer. HFP oligomer was synthesized from cesium fluoride (CsF) and HFP in tetraethyleneglycol dimethylether (TG). Under 5 g of CsF, 200 g of HFP, 10 g of TG, and reaction temperature 30 ℃, HFP dimer content in oligomer was relatively increased. HFPO oligomer with a high molecular weight (Mw 3600) was synthesized in conditions of reaction temperature 0 ℃, HFP oligomer with 35.1% of dimer, and 1.85 g/min of HFPO feeding rate. Otherwise, chain transfer was increased under unoptimized reaction conditions. Consequently, it was found that reaction conditions impact chain propagation and chain transfer in the anionic polymerization of HFPO.
Keywords:hexafluoropropylene oxide;anionic polymerization;hexafluoropropylene oligomer.
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