Effect of using two types of coupling agent in the poplar-polypropylene particleboard manufacturing on its mechanical and physical properties

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Sharbati A.M.; VAZIRI V.; FARAJI F.; ROSTAMI CHARATI F.

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Journal: Journal of Wood and Forest Science and Technology Year:2019 | Volume:26 | Issue:4 Page(s): 17-29

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Title

Effect of using two types of coupling agent in the poplar-polypropylene particleboard manufacturing on its mechanical and physical properties

Author(s)

Sharbati A.M. | VAZIRI V. | FARAJI F. | ROSTAMI CHARATI F. | Issue Writer Certificate

Keywords

Coupling agentQ2

Maleic anhydride grafted to polypropyleneQ1

Physical and mechanical propertiesQ1

Triethoxy methyl silaneQ1

Abstract

Background and Objectives: Wood plastic composite products have received many researches’ attention in recent years. A major part of the composite combination is lignocellulosic materials. One disadvantage of natural fibers is the incompatibility between hydrophilic natural fibers and hydrophobic polymers. This problem can be reduced by incorporation of Coupling agent into the compound. Because of the adding of Coupling agent, the interface between two phases of lignocellulosic fiber and polymeric matrix improve. This study was carried out with the aim of investigating the effect of two types of Coupling agent on the mechanical and physical properties of the particleboard made of polypropylene-poplar. Materials and Methods: In this research, the mixing ratio of poplar wood to polypropylene at level of 90: 10 was used. Phenol formaldehyde resin used as 8% of dry weight of raw material. Two types of Coupling agents of triethoxymethylsilane and Maleic anhydride grafted to polypropylene in level of 6 percent based on dry weight of polypropylene were used. Coupling agents were used in two different methods including inside the resin and on the polypropylene particles. After the mixing process raw material together, mat at temperature of 180 ° C for 5 minutes under hot press was placed. The Physical and mechanical properties were evaluated according to European standards set of EN. Physical and mechanical properties of panels analyzed using factorial analysis in 5% probability level. Results: The results showed that the adding of both types of silane and MAPP Coupling agents improved the bending strength, modulus of elasticity and internal bonding, while decreased water absorption and thickness swelling of the boards compared to the control sample (without Coupling agent). MAPP Coupling agent created more favorable properties in the boards compared to the silane Coupling agent. The adding method of Coupling agent on the polypropylene particles in comparison with inside resin improved the Physical and mechanical properties of the boards. Because in the adding method of Coupling agent on the polypropylene, all of the coupling contents are placed on the polypropylene particles, and therefore, the presence of the Coupling agent on the interface between the polymer phase and the reinforcement phase increases. Conclusion: According to the results of this research, the use of Coupling agent increased significantly the dimensional stability of the boards. The adding of Coupling agents increased bending strength, modulus of elasticity and internal bonding of boards. Compared to the properties of the boards produced by EN standard, with adding method of MAPP on the polypropylene can be produced particleboards with favorable properties for use in wet conditions (Type P3).

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APA: Copy

Sharbati, A.M., VAZIRI, V., FARAJI, F., & ROSTAMI CHARATI, F.. (2019). Effect of using two types of coupling agent in the poplar-polypropylene particleboard manufacturing on its mechanical and physical properties. JOURNAL OF WOOD AND FOREST SCIENCE AND TECHNOLOGY, 26(4 ), 17-29. SID. https://sid.ir/paper/368125/en

Vancouver: Copy

Sharbati A.M., VAZIRI V., FARAJI F., ROSTAMI CHARATI F.. Effect of using two types of coupling agent in the poplar-polypropylene particleboard manufacturing on its mechanical and physical properties. JOURNAL OF WOOD AND FOREST SCIENCE AND TECHNOLOGY[Internet]. 2019;26(4 ):17-29. Available from: https://sid.ir/paper/368125/en

IEEE: Copy

A.M. Sharbati, V. VAZIRI, F. FARAJI, and F. ROSTAMI CHARATI, “Effect of using two types of coupling agent in the poplar-polypropylene particleboard manufacturing on its mechanical and physical properties,” JOURNAL OF WOOD AND FOREST SCIENCE AND TECHNOLOGY, vol. 26, no. 4 , pp. 17–29, 2019, [Online]. Available: https://sid.ir/paper/368125/en

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