Macromolecular Research

The Polymer Society of Korea (한국고분자학회)
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A Kinetic Study of Thermal Degradations of Chitosan/Polycaprolactam Blends

  • Liao, Shen-Kun (Department of Fiber and Composite Materials, Feng Chia University) ;
  • Hung, Chi-Chih (Department of Fiber and Composite Materials, Feng Chia University) ;
  • Lim, Ming-Fung (Department of Business &)
  • Published : 2004.10.01
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Abstract

We have used FT-IR spectra to explain the effects of hydrogen bonding between chitosan and polycaprolactam (PA6). A dynamic mechanical analysis study suggested that the optimum chitosan and PA6 miscibility under the conditions of this experiment were obtained at a blending ratio of 40:60. We studied the thermal degradation of chitosan blended with PA6 (chitosan/PA6) by thermogravimetric analysis and kinetic analysis (by the Ozawa method). Dry chitosan and PA6 exhibited a single stage of thermal degradation and chitosan/PA6 blends having> 20 wt% PA6 exhibited at least two stages of degradation. In chitosan/PA6 blends, chitosan underwent the first stage of thermal degradation; the second stage proceeded at a temperature lower than that of PA6, because the decomposition product of chitosan accelerated the degradation of PA6. The activation energies of the blends were between 130 and 165 kJ/mol, which are also lower than that of PA6.

Keywords

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