Mechanical Properties and Morphology of Wood Plastic Composites Produced with Thermally Treated Beech Wood

Arwinfar, Farhad; Hosseinihashemi, Seyyed Khalil; Latibari, Ahmad Jahan; Lashgari, Amir; Ayrılmış, Nadir

doi:10.15376/biores.11.1.1494-1504

Cited by 20 publications

(35 citation statements)

References 2 publications

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“…g and h that wood flour/PP composites prepared under the mixture of subcritical ethanol and 2% KH550 have considerably fewer holes and many broken fiber ends embedded in PP matrix. The phenomenon is attributed to KH550, which can well accelerate the interfacial reaction between wood flour and PP matrix in the presence of subcritical ethanol .…”

Section: Resultsmentioning

confidence: 99%

Preparation and characterization of eucalyptus wood flour/polypropylene composites by subcritical ethanol and 3‐Aminopropyltriethoxysilane as cosolvent

et al. 2017

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Subcritical fluids assisted reactive extrusion is a novel and promising alternative technique for preparation of wood plastic composites. Because subcritical fluids have moderate process condition, well swollen performance, and excellent dissolvability. Therefore, subcritical fluids are led into the extruder system to alleviate the thermal degradation of wood flour, to reduce the melt viscosity of matrix, and to strengthen the mass transport. The wood flour is expanded in the presence of subcritical ethanol, which favors the permeability. Fourier transform infrared spectroscopy confirms that maleic anhydride grafted polypropylene (PP‐g‐MA) is grafted onto cellulosic chain, and subcritical ethanol promotes the grafting and swollen reaction. A possible mechanism is proposed to explain the effect of subcritical ethanol on the interfacial reactions. In addition, the thermal stability of wood flour, PP, and wood flour/PP composites are studied. Fracture morphology is observed to confirm the interfacial adhesion of wood flour/PP composites. The results suggest that subcritical ethanol leads to a change of crystalline structure of cellulose via X‐ray diffraction. Moreover, the mechanical properties of wood flour/PP composites increase dramatically, while 3‐Aminopropyltriethoxysilane (KH550) is used as co‐solvent dissolving in ethanol. Experimental results reveal that wood flour/PP composites in the presence of subcritical ethanol with 2% KH550 (190°C, 2.4 MPa, and 120 r/min), whose tensile strength, flexural strength, flexural modulus, and non‐notched impact strength increase by 45, 56, 29, and 36%, respectively, possess the best physical properties comparing to those during extrusion without fluids. POLYM. COMPOS., 39:3594–3604, 2018. © 2017 Society of Plastics Engineers

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Section: Resultsmentioning

confidence: 99%

Preparation and characterization of eucalyptus wood flour/polypropylene composites by subcritical ethanol and 3‐Aminopropyltriethoxysilane as cosolvent

et al. 2017

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“…It is reported that the thermal treatment can improve the crystallinity of cellulose and remove impurities of Sinal and Kenal fibes [25,26] and provide better thermal stability for Agave fiber [27] . Arwinfar et al [28] noted good compatibility in polypropylene composites with thermally treated beech wood flour and PPgMA, which resulted in higher tensile strength. Unsal and Ayrilmis [29] and Ayrilmis et al [30] conducted studies on the effects of heat treatment with autoclaved saturated steam at 120, 150 and 180 °C.…”

Section: Introductionmentioning

confidence: 99%

Thermal treatment of açaí (Euterpe oleracea) fiber for composite reinforcement

et al. 2020

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This work investigated the effect of thermal treatment in an autoclave on the chemical, physical, and morphological properties of lignocellulosic fibers from açaí (Euterpe oleracea Mart), and the behavior of this treated fiber in polypropylene (PP) matrix composites with polypropylene-graft-maleic anhydride (PPgMA) as the coupling agent. The treated and untreated fibers were characterized by chemical composition, x-ray diffraction, FTIR spectroscopy, and thermogravimetry, scanning electron microscopy and tensile tests were carried out for the composites. The results showed that the thermal treatment modified the hemicellulose and lignin content and increased the fiber surface roughness, without compromising the thermal stability. The composite prepared with thermally treated fibers and PPgMA exhibited an increase in tensile strength but a reduction in tensile modulus. In conclusion, the thermal treatment of vegetable fiber is a promising technique for improving the performance of composites.

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“…The application of wood in composites allows to achieve the partial biodegradability of the material and significant reduction of production costs at the same time. [1][2][3][4][5][6] In addition, WPC have many other interesting properties, such as, good dimensional stability, good mechanical properties, low specific gravity, and processing ease (low shrinkage of moldings). They are also characterized by good behavior with the external environment, as they can be exposed to the effect of weather conditions without need for impregnation.…”

Section: Introductionmentioning

confidence: 99%

Influence of wood thermal modification on the supermolecular structure of polypropylene composites

Odalanowska

Borysiak

2021

Polymer Composites

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The thermal modification of wood can be an interesting way of improving adhesion in polymer composites, although the mechanical properties of composites with heat treated wood presented so far in many works arouse much controversy. In this work, effects of thermal modification of wood on the supermolecular structure and morphology of wood/polypropylene composites (WPC) were investigated using X-ray diffraction, hot stage optical microscopy,

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Mechanical Properties and Morphology of Wood Plastic Composites Produced with Thermally Treated Beech Wood

Cited by 20 publications

References 2 publications

Preparation and characterization of eucalyptus wood flour/polypropylene composites by subcritical ethanol and 3‐Aminopropyltriethoxysilane as cosolvent

Preparation and characterization of eucalyptus wood flour/polypropylene composites by subcritical ethanol and 3‐Aminopropyltriethoxysilane as cosolvent

Thermal treatment of açaí (Euterpe oleracea) fiber for composite reinforcement

Influence of wood thermal modification on the supermolecular structure of polypropylene composites

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