Thermal degradation kinetics of sucrose palmitate reinforced poly(lactic acid) biocomposites
作者： Ravibabu Valapa , Gopal Pugazhenthi , Vimal Katiyar
DOI: 10.1016/J.IJBIOMAC.2014.01.053
关键词: Differential scanning calorimetry 、 Matrix (chemical analysis) 、 Lactic acid 、 Sucrose Palmitate 、 Degradation (geology) 、 Chemical engineering 、 Thermal 、 Food packaging 、 Degradation kinetics 、 Chemistry 、 Biochemistry 、 Molecular biology 、 Structural biology 、 General Medicine
摘要: Abstract The current work is focused on investigating the influence of novel bio-filler, “sucrose palmitate (SP)” thermal degradation behavior poly(lactic acid) (PLA) biocomposites in order to render its suitability for food packaging application. Thermal PLA was investigated by thermo-gravimetric analysis (TGA) using dynamic heating regime. differential TG revealed that there no change T max value (357 °C) and composites up 5 wt% bio-filler loading. This reveals sucrose acts as a protective barrier decelerating rate PLA. In case 10 wt% filler incorporated matrix, rapidly shifted lower temperature (324 °C). downturn at higher loading due increase acidic sites enhancement observed. Differential scanning calorimetry (DSC) unimodal melting peak indicating α-crystalline form Based profile palmitate, possible mechanism proposed. activation energies ( E ) were evaluated Flynn–Wall–Ozawa Kissinger methods.
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