Author： Yang Peng Fei De Han Yong Li Jun Ying Li Tian Duo
Publisher： Taylor & Francis Ltd
ISSN： 1023-666X
Source： International Journal of Polymer Analysis and Characterization, Vol.16, Iss.4, 2011-05, pp. : 251-258
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Abstract
The blocking reactions of phenyl isocyanate with 1-naphthol and 2-naphthol were investigated with in situ FT-IR. The reaction kinetics was studied and the reaction rates were described by a second-order equation. It was found that there was a remarkable induction period in the reaction. The induction period shortened with increase of temperature, and the induction period of 1-naphthol was obviously longer than that of 2-naphthol. Activation energies and Eyring parameters were also determined for the blocking reaction with 1-naphthol (Ea = 55.3 kJ · mol-1, ΔH = 56.9 kJ · mol-1, ΔS = -120.8 J · mol-1 · K-1) and 2-naphthol (Ea = 74.2 kJ · mol-1, ΔH = 69.8 kJ · mol-1, ΔS = -79.8 J · mol-1 · K-1), respectively.
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