Impacts of gamma irradiation on the properties of hardwood composite based on rice straw and recycled polystyrene foam wastes

Abstract

A hardwood composite (HWC) was formulated by adding rice straw (RS), as filler, to the recycled polystyrene (WPS) foam waste, as a matrix, at 170 C and pressing under 40 kPa. The air dried RS fiber reinforced the recycled spent polymer at fiber content of 50% (mass: mass), then the combination was treated with the maleated form of the polystyrene waste (WPS-g-MA), as coupling agent, at a predetermine ratio. The final HWC boards were subjected to gamma irradiation, in air and at ambient temperature (≈30 AE 3 C), using radiocobalt source ( 60 Co) at a dose rate 0.96 kGy h −1 in the range of integrated doses from 0.5 to 500 kGy. The impacts of increasing gamma absorbed doses on mechanical properties of final product were evaluated based on flexural strength, tensile strength, elongation at break, and tensile modulus measurements. Water absorption by the HWC boards was, also, elaborated under the increasing irradiation doses. To achieve a complete characterization of the prepared composite, the obtained hard samples were investigated applying the Fourier-transform infrared (FTIR) and the scanning electron microscope (SEM) tools. Depending on the experimental data, the renewability in the properties of HWC product is its high resistance capability against γ-irradiation up to 500 kGy and their acceptable attenuation potential, in the range of the applied doses. This provided an additional attractive advantage to the eco-friendly quality of the acquired HWCs based on recycled thermoplastic spent polystyrene foam reinforced with air dried RS. POLYM. COM-POS., 40:2284-2291, 2019

Effect of Amino Silicone Oil-Phosphorylation Hybrid Modification on the Properties of Microcellulose Fibers

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Comparative Analysis of Cellulose, Hemicellulose and Lignin on The Physical and Thermal Properties of Wood Sawdust for Bio-Composite Material Fillers

“…Natural resources to reinforcement of composite materials emphasize mechanical strength in hardness, tensile strength, flexural strength, and elastic modulus as fibre content properties [1,2]. Other parameters, like aspect ratio and volume fraction, can improve load transfer on the interfacial layer to increase mechanical strength and have been widely studied [3,4].…”

Porous carbons prepared from a novel hard wood composite waste for effective adsorption of Pb(ii) and Cd(ii) ions

“…26 HWC was formulated by adding rice straw waste, as ller, to the recycled polystyrene foam waste, as a matrix, (50/50 mass : mass), at 170 °C and pressing under 40 kPa. [26][27][28][29] These studies discussed the possibility of using two of the most problematic wastes to formulate an added-value such as HWC. As well, HWC is a carbon-rich adsorbent which contains large quantities of various oxygenated functional groups in addition to the long life carbon matrix facilitating the sorption of target metal ions.…”