Multicomponent Bio-Based Polymer Systems Comprising Starch and Wood Polymers--Structure and Thermal Behavior

摘要

In this work, the addition of wood particles and wood polymer components (namely, cellulose, lignin) within biopolymer matrix was investigated by the casting method when solution-cast films were obtained. Thermoplastic corn starch and blends of starch and wood particles/wood polymers were used as matrix materials. Fillers including wood sawdust, cellulose and lignin were subsequently added within thermoplastic starch matrix in order to obtain filler loading of 20 wt% based on the amount of corn starch. Composite film samples with a thickness of around 0.25 mm were obtained. FTIR spectroscopy analysis, X-ray diffraction method, water sorption tests, and SEM investigation were used for characterization of resulted biocomposite films. Thermal stability was further investigated by simultaneous thermal analysis in order to evaluate the influence of the filler upon starch based polymer matrix properties.