Water Absorption and Swelling Behaviour of Wood Plastic Composites

Radoor, Sabarish; Karayil, Jasila; Shivanna, Jyothi Mannekote; Siengchin, Suchart

doi:10.1007/978-981-16-1606-8_10

Cited by 4 publications

(3 citation statements)

References 78 publications

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“…When the samples were in an equilibrium state of water absorption (allowing the water absorption to change in time range and period of immersion), the percentages of water absorption of rPP, rPPSD1, rPPSD2, rPPSD3 and rPPSD4 were 1.15%, 4.95%, 9.25%, 12.82% and 17%, respectively. The rPP showed a low absorption percentage as it was hydrophobic and thus absorbed very little water [ 93 ]. The composites showed similar water absorption curves for the entire immersion period.…”

Section: Resultsmentioning

confidence: 99%

Preparation and Characterisation of Wood Polymer Composites Using Sustainable Raw Materials

et al. 2022

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In recent years, composites consisting of polymers and cellulosic materials have attracted increasing research attention. Polypropylene (PP) is among the most common polymer types found in excavated waste from landfills. Moreover, wood waste generated from wood products manufacturing such as sawdust (SD) offers a good potential for the fabrication of composite materials, and it is readily available in the environment. In this paper, wood polymer composites (WPC) consisting of recycled PP (rPP) and (SD) were prepared and characterised. A range of mechanical properties, including tensile strength, flexural properties, creep and hardness were studied, along with morphology, thermal properties, water degradation and contact angle. The results showed that the mechanical and thermal properties of rPP increased with an increase in 40 wt% of the SD content. Furthermore, the SD content significantly influenced the water uptake of the composites. Time–temperature superposition (TTS) was applied to predict the long-term mechanical performance from short-term accelerated creep tests at a range of elevated temperatures. The short-term creep test showed efficient homogeneity between the fillers and matrix with increasing temperature. The produced wood polymer composites displayed a comparable physical property to virgin polymer and wood and could potentially be used for various structural materials.

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Section: Resultsmentioning

confidence: 99%

Preparation and Characterisation of Wood Polymer Composites Using Sustainable Raw Materials

et al. 2022

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“…The percentages of water absorption of RPW, RPW-RWW1, RPW-RWW2, RPW-RWW3, and RPW-RWW4 were 1.2%, 4.4%, 8.5%, 15.1%, and 19.9%, respectively, when the specimen was in an equilibrium state of water absorption (allowing the water absorption to change in time range and period of immersion). RPW showed the lowest water absorption percentage, as it is hydrophobic and thus absorbed less water [55]. The incorporation of RWW into RPW displayed that RPW played a significant role in the water absorption due to wood is lignocellulose material and can absorb more water due to the polar group hydroxyl.…”

Section: Water Absorptionmentioning

confidence: 99%

Development of Wood Polymer Composites from Recycled Wood and Plastic Waste: Thermal and Mechanical Properties

et al. 2022

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The depletion of natural resources due to the aggressive industrialization in the last decades has brought considerable attention to research aimed at developing green and sustainable products using eco-friendly materials. The purpose of the current study was to develop wood polymer composites (WPCs) using recycled plastic waste (RPW) generated from university laboratories and recycled wood waste (RWW) from construction and demolition (C&D) activities by melt-blending technique. The WPCs were characterised for their mechanical and thermal properties, as well as water uptake and morphology. The SEM micrograph indicated good interaction between RWW and RPW matrix. The mechanical strength of the WPCs was found to increase from 26.59 to 34.30 MPa, with an increase of the RWW content in the matrix. The thermal stability was higher in the composite with a higher percentage of RWW in the matrix. The wettability results indicated that the composite with a higher RWW (20%) had a higher water uptake. These results suggest that the produced WPCs can be a promising environmental-friendly material, while maintaining good mechanical, thermal, and wettability properties.

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“…MAPP, one of the most efficient compatibilizing agents in the wood plastic composites industry, was utilized in the manufacturing of composites to enhance the interfacial adhesion between wood flour and polymer matrix. [31][32][33] The WA of composites is limited by the strong interfacial adhesion between fiber and polymer matrix brought on by compatibilizing agents (MAPP chemically binds with OH groups in the cell wall). Compatibilizing agents improve the adhesion quality between plastics and wood flour to reduce voids in the interface region and block hydrophilic groups.…”

Section: Resultsmentioning

confidence: 99%

Determination of technological properties of wood plastic nanocomposites produced by flat press reinforced with nano MgO

Birinci

2023

Journal of Composite Materials

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In this study, wood plastic nanocomposites (WPNC) reinforced with nano magnesium oxide (MgO) were produced in a flat press using the dry blending method. It is aimed to investigate the technological properties of the produced WPNC panels. To achieve this aim, scots pine wood flour, waste polypropylene (PP), maleic anhydride grafted PP (MAPP) and nano MgO were mixed and combined in eight different formulations by dry blending method. The densities, water absorption and thickness swelling, tensile strength, bending strength, modulus of elasticity (MOE), surface roughness and Shore D hardness properties of the obtained WPNC panels were determined. On the other hand, scanning electron microscope (SEM) micrographs were obtained to determine the morphological properties of WPNCs. Nano MgO and MAPP reinforcement positively affected the technological properties of flat-pressed WPNC panels. It was determined that increasing nano MgO ratio and MAPP reinforcement increased the water resistance of WPNC panels. It has been determined that the use of MAPP and nano MgO significantly improves the mechanical properties of WPNC panels. When the SEM micrographs of WPNC panels were examined, it was observed that large voids were formed especially in WPNC panels that without MAPP and nano MgO, and these voids were largely eliminated with the increase of MAPP reinforcement and nano MgO ratio. Following the technological results obtained within the scope of this study, it is recommended to conduct new studies to investigate the biological resistance of nano MgO reinforced WPNCs due to the known antibacterial, catalytic and photocatalytic properties of nano MgO.

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Water Absorption and Swelling Behaviour of Wood Plastic Composites

Cited by 4 publications

References 78 publications

Preparation and Characterisation of Wood Polymer Composites Using Sustainable Raw Materials

Preparation and Characterisation of Wood Polymer Composites Using Sustainable Raw Materials

Development of Wood Polymer Composites from Recycled Wood and Plastic Waste: Thermal and Mechanical Properties

Determination of technological properties of wood plastic nanocomposites produced by flat press reinforced with nano MgO

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