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Synthesis of Polyimides Derived from 2,2-Bis[4-(4-aminobenzoyl)phenoxy]hexafluoropropane and Aromatic Dianhydrides

2,2-Bis[4-(4-nitrobenzoyl)phenoxy]hexafluoropropane과 방향족 이무수물을 사용한 폴리이미드의 합성

  • Park, Jung Hye (Department of Material Engineering, Pukyong National University) ;
  • Ahn, Byung Hyun (Department of Material Engineering, Pukyong National University)
  • 박정혜 (부경대학교 재료공학과) ;
  • 안병현 (부경대학교 재료공학과)
  • Received : 2015.11.13
  • Accepted : 2015.12.21
  • Published : 2016.02.10

Abstract

Aromatic diamines containing hexafluoroisopropylidene and ester moiety were synthesized from 4,4'-hexafluoroisopropylidene diphenol and nitrobenzoyl chloride. The reaction of aromatic diamines with hexafluoroisopropylidene phthalicdianhydride (6FDA) or pyromellitic dianhydride (PMDA) gave four kinds of poly(amic acid)s. Their inherent viscosities ranged from 0.196 to 0.346 dL/g. Poly(amic acid)s were converted to polyimides by thermal imidization. The glass transition temperatures ($T_g$) of polyimides were between 241 and $289^{\circ}C$. The 5% weight loss temperatures were recorded in the range of $430{\sim}492^{\circ}C$. The tensile strength of polyimide films were measured as 29.84~64.38 MPa.

Acknowledgement

Supported by : 부경대학교

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