Performance And Properties Of Polypropylene-Cellulose And Polypropylene- Oil Palm Empty Fruit Bunch Biocomposites

Natural fibers such as oil palm empty fruit bunch fibers (EFBF) can be used as environmentally friendly alternatives to conventional reinforcing fibers (e.g., glass) in composites. The interest in natural fiber-reinforced polymer composites is growing rapidly due to its high performance in terms of...

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Main Author:	Mohd Khalid, Mohd Khalid
Format:	Thesis
Language:	English English
Published:	2007
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Online Access:	http://psasir.upm.edu.my/id/eprint/5185/1/FK_2007_18.pdf
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spelling	my-upm-ir.51852013-05-27T07:21:00Z Performance And Properties Of Polypropylene-Cellulose And Polypropylene- Oil Palm Empty Fruit Bunch Biocomposites 2007 Mohd Khalid, Mohd Khalid Natural fibers such as oil palm empty fruit bunch fibers (EFBF) can be used as environmentally friendly alternatives to conventional reinforcing fibers (e.g., glass) in composites. The interest in natural fiber-reinforced polymer composites is growing rapidly due to its high performance in terms of mechanical properties, significant processing advantages, excellent chemical resistance, low cost and low density. These advantages place natural fiber composites among the high performance composites having economic and environmental advantages. On the other hand, lack of good interfacial adhesion and poor resistance to moisture absorption make the use of natural fiber-reinforced composites less attractive. In order to improve their interfacial properties, these EFB fibers were subjected to chemical treatments, namely, chlorination, mercerization and acetylation. Preparation of cellulose by selective removal of non-cellulosic compounds constitutes the main objective of the chemical treatments of EFBF to improve the performance of fiber-reinforced composites. The objective of this study was to determine the effects of cellulose on the performance of the cellulose-reinforced biocomposites and comparing its property with the EFBF-reinforced biocomposites. Biocomposites were prepared by blending polypropylene-cellulose and polypropylene-EFBF at different weight ratios using a twin screw brabender. Further, effects of two different coupling agents namely MAPP and TMPTA on the properties of PP-cellulose and PP-EFBF biocomposite were also studied. These coupling agent were incorporated in order to enhance the fiber matrix adhesion. Mechanical and physical properties of both the biocomposites were evaluated. Compared to PP-EFBF biocomposites, PP-cellulose biocomposites showed better fiber-matrix interaction as observed from the good dispersion of fibers in the matrix system. The tensile fracture and impact fracture surfaces of the composites were characterized by scanning electron microscopy confirms the cellulose and PP interface had improved interfacial bonding. Incorporation of MAPP as coupling agent does not show significant improvement in case of PP-cellulose biocomposite. However, it showed good results for PP-EFBF biocomposite. On the other hand TMPTA coupled PP-cellulose biocomposite offered superior physical and mechanical properties. The strong intermolecular cellulose-matrix bonding indicates a decrease in the high rate of water absorption in PP-cellulose biocomposites. The dynamic mechanical analysis (DMA) and Thermogravimetry analysis (TGA) technique were also used to measure the viscoelastic properties and melting point of both the biocomposite. The scanning electron microscopy photographs of fiber surface characteristics and fracture surfaces of composites clearly indicated the extent of fiber-matrix interface adhesion 2007 Thesis http://psasir.upm.edu.my/id/eprint/5185/ http://psasir.upm.edu.my/id/eprint/5185/1/FK_2007_18.pdf application/pdf en public masters Universiti Putra Malaysia Faculty of Engineering English
institution	Universiti Putra Malaysia
collection	PSAS Institutional Repository
language	English English
topic
spellingShingle	Mohd Khalid, Mohd Khalid Performance And Properties Of Polypropylene-Cellulose And Polypropylene- Oil Palm Empty Fruit Bunch Biocomposites
description	Natural fibers such as oil palm empty fruit bunch fibers (EFBF) can be used as environmentally friendly alternatives to conventional reinforcing fibers (e.g., glass) in composites. The interest in natural fiber-reinforced polymer composites is growing rapidly due to its high performance in terms of mechanical properties, significant processing advantages, excellent chemical resistance, low cost and low density. These advantages place natural fiber composites among the high performance composites having economic and environmental advantages. On the other hand, lack of good interfacial adhesion and poor resistance to moisture absorption make the use of natural fiber-reinforced composites less attractive. In order to improve their interfacial properties, these EFB fibers were subjected to chemical treatments, namely, chlorination, mercerization and acetylation. Preparation of cellulose by selective removal of non-cellulosic compounds constitutes the main objective of the chemical treatments of EFBF to improve the performance of fiber-reinforced composites. The objective of this study was to determine the effects of cellulose on the performance of the cellulose-reinforced biocomposites and comparing its property with the EFBF-reinforced biocomposites. Biocomposites were prepared by blending polypropylene-cellulose and polypropylene-EFBF at different weight ratios using a twin screw brabender. Further, effects of two different coupling agents namely MAPP and TMPTA on the properties of PP-cellulose and PP-EFBF biocomposite were also studied. These coupling agent were incorporated in order to enhance the fiber matrix adhesion. Mechanical and physical properties of both the biocomposites were evaluated. Compared to PP-EFBF biocomposites, PP-cellulose biocomposites showed better fiber-matrix interaction as observed from the good dispersion of fibers in the matrix system. The tensile fracture and impact fracture surfaces of the composites were characterized by scanning electron microscopy confirms the cellulose and PP interface had improved interfacial bonding. Incorporation of MAPP as coupling agent does not show significant improvement in case of PP-cellulose biocomposite. However, it showed good results for PP-EFBF biocomposite. On the other hand TMPTA coupled PP-cellulose biocomposite offered superior physical and mechanical properties. The strong intermolecular cellulose-matrix bonding indicates a decrease in the high rate of water absorption in PP-cellulose biocomposites. The dynamic mechanical analysis (DMA) and Thermogravimetry analysis (TGA) technique were also used to measure the viscoelastic properties and melting point of both the biocomposite. The scanning electron microscopy photographs of fiber surface characteristics and fracture surfaces of composites clearly indicated the extent of fiber-matrix interface adhesion
format	Thesis
qualification_level	Master's degree
author	Mohd Khalid, Mohd Khalid
author_facet	Mohd Khalid, Mohd Khalid
author_sort	Mohd Khalid, Mohd Khalid
title	Performance And Properties Of Polypropylene-Cellulose And Polypropylene- Oil Palm Empty Fruit Bunch Biocomposites
title_short	Performance And Properties Of Polypropylene-Cellulose And Polypropylene- Oil Palm Empty Fruit Bunch Biocomposites
title_full	Performance And Properties Of Polypropylene-Cellulose And Polypropylene- Oil Palm Empty Fruit Bunch Biocomposites
title_fullStr	Performance And Properties Of Polypropylene-Cellulose And Polypropylene- Oil Palm Empty Fruit Bunch Biocomposites
title_full_unstemmed	Performance And Properties Of Polypropylene-Cellulose And Polypropylene- Oil Palm Empty Fruit Bunch Biocomposites
title_sort	performance and properties of polypropylene-cellulose and polypropylene- oil palm empty fruit bunch biocomposites
granting_institution	Universiti Putra Malaysia
granting_department	Faculty of Engineering
publishDate	2007
url	http://psasir.upm.edu.my/id/eprint/5185/1/FK_2007_18.pdf
_version_	1747810369951236096

Performance And Properties Of Polypropylene-Cellulose And Polypropylene- Oil Palm Empty Fruit Bunch Biocomposites

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