The effect of nanographene on physical, mechanical and thermal properties wood biocomposite- polylactic acid

Nouri Sadegh, Nematollah (2021) The effect of nanographene on physical, mechanical and thermal properties wood biocomposite- polylactic acid. Masters thesis, University of Zabol.

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Abstract

Green nocomposites based on polylactic acid (PLA) and Wood Flour with different loadings of graphene nanoparticles (GNPs) were produced. The mechanical strength, dimensional stability, and viscoelastic behavior of nanocomposites were characterized by static mechanical analysis (flexural and tensile), water uptake and thickness swelling, and dynamic mechanical analysis (DMTA) tests. Thermal properties of samples were studied by thermogravimetric analysis (TGA) and differential scanning calorimetriy (DSC). Dispersion of GNPs in the specimens was studied by X-ray diffractometry (XRD) and field emission scanning electron microscopy (FE-SEM). Results indicated that the incorporation of GNPS into the fabricated samples, improved the mechanical properties of the composites. The water absorption and thickness swelling of the composites decreased with increasing GNPs content. In general, the specimens filled with GNPs showed the highest values of storage and loss modulus compared with the other ones, due to highest interaction taking place at the matrix–filler interface. Morphological images and X-ray diffractometry show that the GNPs were homogeneously and well-dispersed in the composites. Based on the findings obtained from the present study, it can be said that the optimum content of GNPs for the fabricated WPC samples is 2%.

Item Type: Thesis (Masters)
Uncontrolled Keywords: Nano graphene, polylactic acid, biocomposite, wood plastic
Subjects: T Technology > TS Manufactures
Depositing User: Mrs najmeh khajeh
Date Deposited: 03 Oct 2022 05:28
Last Modified: 03 Oct 2022 05:28
URI: http://eprints.uoz.ac.ir/id/eprint/3136

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