Influence of Ionizing Radiation on the Mechanical Properties of a Wood-Plastic Composite

Palm, Andrew; Smith, Jennifer L.; Driscoll, Mark; Smith, Leonard; Larsen, L. Scott

doi:10.1016/j.phpro.2015.05.079

Cited by 12 publications

(6 citation statements)

References 18 publications

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“…Ferreira et al (2014) have found that mechanical (tensile and impact) properties of High Density Polyethylene (HDPE)/ piassava fibre 70-30 w/w are improved after e-beam irradiation even at high irradiation dose (200 kGy), maybe because crosslinking is prominent in HDPE. Same observations were made by Palm et al (2015Palm et al ( , 2016 with increases of modulus, ultimate strength and hardness, after irradiation of PE-based wood plastic composites (WPCs) up to 250 kGy. The authors assumed that crosslinking of polyethylene dominated the degradation of cellulosic wood fibres inherent to irradiation, thus explaining the improved mechanical performances of irradiated WPCs.…”

Section: Direct Irradiation Of Natural Fibre Reinforced Compositesmentioning

confidence: 57%

Radiation-induced modifications in natural fibres and their biocomposites: Opportunities for controlled physico-chemical modification pathways?

Moigne¹,

Sonnier²,

Hage³

et al. 2017

Industrial Crops and Products

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Active research is currently being done on the development of efficient surface modifications and functionali-zation of natural fibres aiming to improve biocomposites performances. Electron beam and gamma (γ) radiation treatments have been widely used to treat various lignocellulosic biomass with the aim of improving their accessibility to solvents and reagents for their subsequent chemical modification and processing, or for en-hancing cellulose enzymatic hydrolysis for the production of ethanol and 2nd generation biofuels. The relevance of ionizing radiation treatments for the modification of natural fibres and their biocomposites is addressed in this review. They can indeed generate radicals or functional groups available for grafting functionalized molecules of interest on natural fibres. The effect of ionizing radiations on the structure of lignocellulosic substrates, and more particularly natural fibres, is discussed. The impact of composite and fibre irradiation on biocomposites prop-erties is detailed. The last part of the review presents insights on advantages of radiation-grafting as an in-novative strategy to functionalize natural fibres and improve functional properties of biocomposites. The in-dustrial feasibility and costs of radiation induced modifications are also discussed. Based on literature, it appears that ionizing radiation methods used in suitable and controlled conditions are relevant over other physical and chemical methods developed for the surface modification and functionalization of bio-reinforcements in com-posite applications.

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Section: Direct Irradiation Of Natural Fibre Reinforced Compositesmentioning

confidence: 57%

Radiation-induced modifications in natural fibres and their biocomposites: Opportunities for controlled physico-chemical modification pathways?

Moigne¹,

Sonnier²,

Hage³

et al. 2017

Industrial Crops and Products

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“…Exposure to the electron beam in polyethylene-based wood plastic composites boosted ultimate strength, modulus of elasticity (MOE), and moisture content (Palm et al, 2015). The tensile and in-planar characteristics of three-dimensional needled textile reinforcement on ceramic matrix composites (3DN CMCs) were investigated by Xu et al (Xu et al, 2015).…”

Section: Introductionmentioning

confidence: 99%

Effect of coconut shell nanopowder reinforcement in the development of palm fiber composites

Dhas

Lewise

Kumar³

et al. 2022

Front. Mater.

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Lightweight materials are being employed in aeronautical and automobile industries for high strength, lower weight, and energy consumption. Attention is needed to control pollution through the usage of harmful synthetic composites globally. In this work, coconut shell nanofillers are reinforced in the development of various palm fiber (leaf stalk, leaf sheath, leaf-spine, and fruit) composites using the hand layup technique. Mechanical and morphological effects of the addition of nano-coconut-shell-powder to the composites are addressed. The palm fibers are sandwiched within the glass fiber to improve the strength of composites. The addition of coconut shell nanoparticles in the composites improves the tensile, flexural, impact, hardness, and water absorption characteristics. SEM image observations on the composite indicate the buildup of nanomodified matrix residues around the fiber bundle. The adhesive property of the composite is confirmed by Fourier transform infrared spectroscopy examination, which reveals the presence of one additional alcohol/phenol OH stretch, one less alkyl CH stretch, and aromatic CH bending functional groups. The inclusion of palm fibers during the fabrication of composites facilitated the pushing of curves to higher temperatures with considerable degradation temperatures, thereby increasing thermal stability and making them suitable for thermal applications. Development of the eco-composite changes environmental impact factors aiming sustainability.

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“…When cellulose, the primary structural component of wood, is exposed to electron beam radiation, the dominant reaction is cellulose chain scissoring . The resulting degradation of the wood particles may occur in a radiation crosslinked wood thermoplastic composite . On the other hand, lignin is the most radiation‐resistant component, because of its aromatic groups, protecting carbohydrates from radiation.…”

Section: Introductionmentioning

confidence: 99%

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

Eskander

Tawfik

2018

Polymer Composites

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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

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Influence of Ionizing Radiation on the Mechanical Properties of a Wood-Plastic Composite

Cited by 12 publications

References 18 publications

Radiation-induced modifications in natural fibres and their biocomposites: Opportunities for controlled physico-chemical modification pathways?

Radiation-induced modifications in natural fibres and their biocomposites: Opportunities for controlled physico-chemical modification pathways?

Effect of coconut shell nanopowder reinforcement in the development of palm fiber composites

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

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