Polymer(Korea) (폴리머)

The Polymer Society of Korea (한국고분자학회)
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Kinetics on the Synthesis of Poly(caprolactone diol) and Aliphatic Lsocyanate by FTIR Spectroscopy

FTIR을 이용한 폴리(카프로락톤 다이올)과 지방족 이소시아네이트의 반응속도 연구

  • Kang, Suk-Hwan (School of Chemical Engineering, Chungnam National University) ;
  • Yang, Yun-Kyu (School of Chemical Engineering, Chungnam National University) ;
  • Kwak, Noh-Seok (School of Chemical Engineering, Chungnam National University) ;
  • Kang, Yun-Uk (Central Research Lab., Aekyung Industrial Co.) ;
  • Hwang, Taek-Sung (School of Chemical Engineering, Chungnam National University)
  • 강석환 (충남대학교 화학공학과) ;
  • 양윤규 (충남대학교 화학공학과) ;
  • 곽노석 (충남대학교 화학공학과) ;
  • 강윤욱 ((주)애경산업 중앙연구소) ;
  • 황택성 (충남대학교 화학공학과)
  • Published : 2005.01.01
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Abstract

Kinetic study of a reaction between poly(caprolactone diol) and aliphatic isocyanate was investigated by FTIR spectroscopy. The reaction rate was obtained from analyzing the absorbance change of NCO peak (2265 $cm^{-1}$) in series IR spectra. In the results, the overall reaction between PCL and isocyanate conformed to the simple second-order law, and the rate constant increases with increasing reaction temperature. The activation energies obtained from the evaluation of kinetic data were 25.4∼30.9 kJ/mol for hexamethylene diisocyanate and 16.8∼22.1 kJ/mol for cyclohexylmethane diisocyanate, respectively.

FTIR을 이용하여 폴리(카프로락톤 다이올)과 지방족 이소시아네이트간의 반응속도에 관한 연구를 수행하였다. NCO 피크(2265 $cm^{-1}$)의 흡광도 변화를 통하여 반응속도를 해석하였다. 그 결과, 폴리(카프로락톤 다이올)과 이소시아네이트간의 반응은 전체적으로 단순 2차 반응속도법과 일치함이 확인되었고, 반응온도의 증가에 따라 속도 상수는 증가하였다. 반응속도 상수로부터 구한 활성화에너지는 hexamethylene diisocyanate의 경우 25.4~30.9 kJ/mol, cyclohexylmethane diisocyanate의 경우 16.8~22.1 kJ/mol로 각각 나타났다.

Keywords

References

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