Article
  • Syntheses of Colorless and Transparent Copolyimides and Comparison of the Properties of Their Copolyimides
  • Ju J, Chang JH
  • 무색 투명 폴리이미드 공중합체의 합성 및 물성 비교
  • 주지은, 장진해
Abstract
Two series of copolyimides (Co-PIs) were prepared by reacting 4,4'-(hexafluoroisopropylidene) diphthalic anhydride (6FDA) and 1,2,4,5-benzentetra carboxylic dianhydride (pyromellitic dianhydride) (PMDA), as dianhydrides based on 4,4'-biphthalic anhydride (BPA) and 2,2'-bis(trifluoromethyl)benzidine (TFB) by using thermal- and chemical imidizations. Co-PIs films with different dianhydride monomer compositions were compared in terms of their thermal properties and optical transparencies. The addition of PMDA was more effective than the addition of 6FDA for improving the thermal properties. Meanwhile, 6FDA is more effective in optical transparencies.

4,4'-Biphthalic anhydride(BPA)와 2,2'-bis(trifluoromethyl) benzidine(TFB)의 구조에 서로 다른 무수물인 4,4'-(hexafluoroisopropylidene) diphthalic anhydride(6FDA)와 1,2,4,5-benzentetra carboxylic dianhydride(pyromellitic dianhydride) (PMDA)를 각각 반응시켜 열적 및 화학적 이미드화 반응을 통해 두 가지 시리즈의 폴리이미드 공중합체(copolyimide, Co-PI)를 합성하였다. 합성한 Co-PI를 각각 다른 두 가지 무수물 단량체의 조성에 따라 열적 성질 및 광학적 투명성을 서로 비교 분석하였다. 열적 성질을 증가시키기 위해서는 6FDA보다는 PMDA가 더 효과적이었으나, 광학 투명성에서는 오히려 6FDA가 더 효과적이었다.

Keywords: copolyimide; films; thermal property; optical transparency.

References
  • 1. Kim JH, Choi MC, Kim HJ, Kim YK, Chang JH, Han MJ, Kim II, Ha CS, J. Nanosci. Nanotechnol., 10, 388 (2010)
  •  
  • 2. Grem G, Leditzky G, Ulrich B, Leising G, Adv. Mater., 4, 32 (1992)
  •  
  • 3. Tang CW, Van Slyke SA, Appl. Phys. Lett., 51, 913 (1987)
  •  
  • 4. Park JH, Kim JH, Park JW, Chang JH, Ha CS, J. Nanosci. Nanotechnol., 8, 1700 (2008)
  •  
  • 5. Wang HW, Dong RX, Chu HC, Chang KC, Lee WC, Mater. Chem. Phys., 94(1), 42 (2005)
  •  
  • 6. Ge Z, Fan L, Yang S, Eur. Polym. J., 44, 1252 (2008)
  •  
  • 7. Lee EY, Hwang T, Nam JD, Polym.(Korea), 36(4), 448 (2012)
  •  
  • 8. Min U, Chang JH, Polym.(Korea), 34(6), 495 (2010)
  •  
  • 9. Liu JG, Zhao XJ, Fan HSL, Yang SY, High Perform. Polym., 18, 851 (2006)
  •  
  • 10. Yang CP, Su YY, Chen YC, J. Appl. Polym. Sci., 102(5), 4101 (2006)
  •  
  • 11. Lee C, Iyer P, Han HS, J. Polym. Sci. B: Polym. Phys., 42(12), 2202 (2004)
  •  
  • 12. Hasegawa M, Horii S, Polym. J., 39, 610 (2007)
  •  
  • 13. Yang SY, Park CE, Jung MS, Polymer, 44(11), 3243 (2003)
  •  
  • 14. Ju J, Chang JH, Macromol. Res., 22(5), 549 (2014)
  •  
  • 15. Sasaki T, Moriuchi H, Yano S, Yokota R, Polymer, 46(18), 6968 (2005)
  •  
  • 16. Tyan HL, Liu YC, Wei KH, Chem. Mater., 11, 1942 (1999)
  •  
  • 17. Feiring AE, Auman BC, Wonchoba ER, Macromolecules, 26, 2779 (1993)
  •  
  • 18. Kailani MH, Sung CSP, Huang SJ, Macromolecules, 25, 3751 (1992)
  •  
  • 19. Park SK, Farris RJ, Polymer, 42(26), 10087 (2001)
  •  
  • 20. Kailani MH, Sung CSP, Macromolecules, 31(17), 5771 (1998)
  •  
  • 21. Chen YY, Yang CP, Hsiao SH, Eur. Polym. J., 42, 1705 (2006)
  •  
  • 22. Liu JG, Nakamura Y, Shibasaki Y, Ando S, Ueda M, Macromolecules, 40(13), 4614 (2007)
  •  
  • Polymer(Korea) 폴리머
  • Frequency : Bimonthly(odd)
    ISSN 0379-153X(Print)
    ISSN 2234-8077(Online)
    Abbr. Polym. Korea
  • 2023 Impact Factor : 0.4
  • Indexed in SCIE

This Article

  • 2015; 39(2): 275-280

    Published online Mar 25, 2015

  • Received on Jul 4, 2014
  • Accepted on Aug 28, 2014