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Information Journal Paper

Title

EFFECT OF CHEMICAL MODIFICATION OF WOOD FLOUR ON LONG-TERM WATER ABSORPTION AND THICKNESS SWELLING AND MORPHOLOGICAL STUDY OF WOOD PLASTIC COMPOSITE

Pages

  175-198

Abstract

 Background and objectives: Wood plastic composite that briefly (WPC) are called are a new class of composite materials that in recent years have been attended by many researchers and industries. Since, the major part of these composites is the wood flour, these composites such as wood are moisture absorbent. So, this research with aim of evaluation the effect of CHEMICAL MODIFICATION of wood flour on long-term water absorption and thickness swelling, HUMIDITY COEFFICIENT DIFFUSION, THICKNESS SWELLING RATE and morphological study of wood plastic composite was done.Materials and methods: For this purpose first, wood flour with acetic acid, benzyl chloride and sodium hydroxide were modified separately. For ensure the CHEMICAL MODIFICATION, Fourier transform infrared (FTIR) spectroscopy tests was done. Wood flour (60 wt %), polypropylene and MAPP (4 phc) were mixed by extruder and the test specimens were fabricated using the injection molding machine. According to the ASTM D 7031-04 standard, the long-term water absorption and thickness swelling were measured. Morphological study of wood plastic composite was done by scanning electron microscopy.Results: The result showed that long-term water absorption and thickness swelling, HUMIDITY COEFFICIENT DIFFUSION and THICKNESS SWELLING RATE decreased by CHEMICAL MODIFICATION of wood flour. The Result of INFRARED SPECTROSCOPY revealed that the CHEMICAL MODIFICATION of wood floor caused to decrease the intensity peak of hydroxyl groups. Scanning electron microscopy images showed that CHEMICAL MODIFICATION of wood flour led to improve the interface between wood and plastic. The highest weight percentage gain of wood flour was observed for modification by benzoylation.Conclusion: The CHEMICAL MODIFICATION of wood flour for improvement of the interface between two phases of wood and plastic is a good idea. This modification reduces the radius of irregularly capillary tubes in wood plastic composite and decreases the available hydroxyl groups for creating hydrogen bonds with water molecules. These factors improve the physical properties of wood plastic composite, such as water absorption, thickness swelling.

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    APA: Copy

    ISMAEILI MOGHADAM, S.. (2017). EFFECT OF CHEMICAL MODIFICATION OF WOOD FLOUR ON LONG-TERM WATER ABSORPTION AND THICKNESS SWELLING AND MORPHOLOGICAL STUDY OF WOOD PLASTIC COMPOSITE. JOURNAL OF WOOD AND FOREST SCIENCE AND TECHNOLOGY, 23(4), 175-198. SID. https://sid.ir/paper/156908/en

    Vancouver: Copy

    ISMAEILI MOGHADAM S.. EFFECT OF CHEMICAL MODIFICATION OF WOOD FLOUR ON LONG-TERM WATER ABSORPTION AND THICKNESS SWELLING AND MORPHOLOGICAL STUDY OF WOOD PLASTIC COMPOSITE. JOURNAL OF WOOD AND FOREST SCIENCE AND TECHNOLOGY[Internet]. 2017;23(4):175-198. Available from: https://sid.ir/paper/156908/en

    IEEE: Copy

    S. ISMAEILI MOGHADAM, “EFFECT OF CHEMICAL MODIFICATION OF WOOD FLOUR ON LONG-TERM WATER ABSORPTION AND THICKNESS SWELLING AND MORPHOLOGICAL STUDY OF WOOD PLASTIC COMPOSITE,” JOURNAL OF WOOD AND FOREST SCIENCE AND TECHNOLOGY, vol. 23, no. 4, pp. 175–198, 2017, [Online]. Available: https://sid.ir/paper/156908/en

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