Abstract
The objective of this work is to investigate the influence of ZnO on the thermal behaviour of PLA/ZnO biocomposite films. A solvent casting method was used to prepare the PLA and the PLA/ZnO biocomposite films. The effect of the ZnO content was tested with PLA/ZnO biocomposite films prepared with different ZnO content, i.e 0.1 and 1 phr, with respect to the neat PLA. Analysis on functional groups of PLA and PLA/ZnO biocomposite films were conducted using Fourier Transform Infrared (FTIR). The thermal behavior properties were measured by Differential scanning calorimetry (DSC) and Thermogravimetric analysis (TGA). The glass transitions temperature of PLA/ZnO biocomposite films showed a significant shift of the glass transition and melting temperature towards lower temperatures. The increasing ZnO content added into PLA/ZnO biocomposite films decreased the glass transition and melting temperature. The addition of ZnO into PLA matrix accelerated thermal degradation of PLA/ZnO biocomposite films. The increase of ZnO content in PLA/ZnO biocomposite films increased the char residue.
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