Abstract
The thermal degradation behavior of the biocomposite with thermoplastic starch (TPS), poly(ε-caprolactone) (PCL) and bleached sisal fibers were investigated by thermogravimetry analysis (TG/DTG) under synthetic air atmosphere, differential scanning calorimetry, and their crystal structure by X-ray diffraction. Applying the non-isothermal Ozawa method, the TG/DTG curves average activation energy could be obtained for thermal degradation of the biocomposites with 5, 10, and 20 % of bleached sisal fibers. The apparent activation energy values for the biocomposites decreased when compared with the TPS/PCL blend, requiring lower energy to recycle this material. However, continuous addition of sisal fibers increased the activation energy of composites.
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The authors are grateful for the financial support of the projects granted by FAPESP (2008/08264-9), Capes, CNPq, FINEP, and Embrapa.
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Carmona, V.B., de Campos, A., Marconcini, J.M. et al. Kinetics of thermal degradation applied to biocomposites with TPS, PCL and sisal fibers by non-isothermal procedures. J Therm Anal Calorim 115, 153–160 (2014). https://doi.org/10.1007/s10973-013-3259-0
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DOI: https://doi.org/10.1007/s10973-013-3259-0