• Kinetics on the Synthesis of Poly(caprolactone diol) and Aliphatic Lsocyanate by FTIR Spectroscopy
  • Kang SH, Yang YK, Kwak NS, Kang YU, Hwang TS
  • FTIR을 이용한 폴리(카프로락톤 다이올)과 지방족 이소시아네이트의 반응속도 연구
  • 강석환, 양윤규, 곽노석, 강윤욱, 황택성
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: poly(caprolactone diol); aliphatic isocyanate; rate constant; activation energy

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This Article

  • 2005; 29(1): 59-63

    Published online Jan 25, 2005

  • Received on Sep 24, 2004
  • Accepted on Nov 30, 2004