Nanocellulose / Polystyrene nanocomposites: Biodegradation, Morphology and Mechanical Properties.

[摘要] Nanocellulose/polystyrene (NC/PS) nanocomposites were prepared by a conventional solvent castingtechnique with different concentrations of NC (0.1, 0.4, 0.8, 2, 4 and 7 wt%). The biodegradation behavior of thenanocomposites was performed by the soil burial method, where the weight loss and average molecular weightresults of the NC/PS as a function of biodegradation time obtained from the soil before and after burial test aredetermined. Scanning electron microscopy images of the NC/PS nanocomposite surfaces (0.1 and 2 wt.%) beforeand after biodegradation in soil is investigated. The change in the structure of was confirmed by Fourier transforminfrared spectroscopy before and after buried for 4 months. The effect of NC on the nanocomposites mechanicalproperties; tensile strength and elongation at break were examined. Derivative differential scanning calorimetrycurves were used to determine the thermal degradation, thermal stability and glass transition of the preparednanocomposites. Finally, the pathogenic strains of nanocomposites were studied, where the microbial degradationof PS and NC/PS nanocomposites sheets was verified using ASTM G22-76 standard method that conformednanocellulose helps in degradation of nanocomposites through the formation of porous in the structure of NC/PSnanocomposites..

[学科分类] 工程和技术（综合）

[关键词] Nanocellulose;Nanocomposites;Polystyrene;Biodegradation;Mechanical Properties