Effects of selected treatments on properties of pineapple leaf fibre reinforced high impact polystyrene composites

The objective of this study was to investigate the physical, mechanical, and thermal properties of pineapple leaf fibre (PALF) reinforced high impact polystyrene (HIPS) composites. PALF is one of the natural fibres that is rich in cellulose and has high tensile strength properties. The fibres were o...

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Main Author:	Siregar, Januar Parlaungan
Format:	Thesis
Language:	English
Published:	2011
Subjects:	Pineapple - Research Polystyrene
Online Access:	http://psasir.upm.edu.my/id/eprint/42140/7/FK%202011%2039R.pdf
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id	my-upm-ir.42140
record_format	uketd_dc
spelling	my-upm-ir.421402016-04-25T02:53:02Z Effects of selected treatments on properties of pineapple leaf fibre reinforced high impact polystyrene composites 2011-02 Siregar, Januar Parlaungan The objective of this study was to investigate the physical, mechanical, and thermal properties of pineapple leaf fibre (PALF) reinforced high impact polystyrene (HIPS) composites. PALF is one of the natural fibres that is rich in cellulose and has high tensile strength properties. The fibres were obtained from the leaves of the pineapple plant. The PALF fibres were ground and sieved into different sizes of fibres; 10-40, 40-60 and 60-80 meshes. Six different fibre loadings of 0%, 10%, 20%, 30%, 40% and 50% by weight of pineapple fibre were used to reinforcement in high impact polystyrene. Mixing PALF fibre and HIPS was carried out using a melt mixer and then the resulting material was compressed in the mould using a Carver laboratory press at temperature 165°C. The results showed that the addition of untreated PALF fibre to reinforce HIPS has decreased the tensile strength, flexural strength, impact strength of composites but increased the tensile moduli, flexural moduli and hardness of the composites. The decrease of the strength of HIPS/PALF composites was due to the poor compatibility of hydrophilic PALF and hydrophobic HIPS matrix resulting in poor dispersion of fibre in the matrix and weak interfacial bonding between the fibres and HIPS matrix. Consequently this study also investigated the effect of alkali treatment and compatibilising agent to improve the mechanical and thermal properties of the composites. The PALF fibres were soaked in two different concentrations of NaOH solution which were fixed at 2% and 4% of sodium hydroxide (NaOH) solution. Two types of compatibilising agent were used in this research, namely polystyrene-block-poly(ethylene-ran-butylene)-block-poly(styrene-graft-maleic anhydride) and poly(styrene-co-maleic anhydride). The addition of fibre treatment and compatibilising agent has improved the mechanical and thermal properties of PALF/HIPS composites. The study of the effect electron beam irradiation and the addition of croslinking agent also increased the mechanical properties of the composites. Pineapple - Research Polystyrene 2011-02 Thesis http://psasir.upm.edu.my/id/eprint/42140/ http://psasir.upm.edu.my/id/eprint/42140/7/FK%202011%2039R.pdf application/pdf en public phd doctoral Universiti Putra Malaysia Pineapple - Research Polystyrene
institution	Universiti Putra Malaysia
collection	PSAS Institutional Repository
language	English
topic	Pineapple - Research Polystyrene
spellingShingle	Pineapple - Research Polystyrene Siregar, Januar Parlaungan Effects of selected treatments on properties of pineapple leaf fibre reinforced high impact polystyrene composites
description	The objective of this study was to investigate the physical, mechanical, and thermal properties of pineapple leaf fibre (PALF) reinforced high impact polystyrene (HIPS) composites. PALF is one of the natural fibres that is rich in cellulose and has high tensile strength properties. The fibres were obtained from the leaves of the pineapple plant. The PALF fibres were ground and sieved into different sizes of fibres; 10-40, 40-60 and 60-80 meshes. Six different fibre loadings of 0%, 10%, 20%, 30%, 40% and 50% by weight of pineapple fibre were used to reinforcement in high impact polystyrene. Mixing PALF fibre and HIPS was carried out using a melt mixer and then the resulting material was compressed in the mould using a Carver laboratory press at temperature 165°C. The results showed that the addition of untreated PALF fibre to reinforce HIPS has decreased the tensile strength, flexural strength, impact strength of composites but increased the tensile moduli, flexural moduli and hardness of the composites. The decrease of the strength of HIPS/PALF composites was due to the poor compatibility of hydrophilic PALF and hydrophobic HIPS matrix resulting in poor dispersion of fibre in the matrix and weak interfacial bonding between the fibres and HIPS matrix. Consequently this study also investigated the effect of alkali treatment and compatibilising agent to improve the mechanical and thermal properties of the composites. The PALF fibres were soaked in two different concentrations of NaOH solution which were fixed at 2% and 4% of sodium hydroxide (NaOH) solution. Two types of compatibilising agent were used in this research, namely polystyrene-block-poly(ethylene-ran-butylene)-block-poly(styrene-graft-maleic anhydride) and poly(styrene-co-maleic anhydride). The addition of fibre treatment and compatibilising agent has improved the mechanical and thermal properties of PALF/HIPS composites. The study of the effect electron beam irradiation and the addition of croslinking agent also increased the mechanical properties of the composites.
format	Thesis
qualification_name	Doctor of Philosophy (PhD.)
qualification_level	Doctorate
author	Siregar, Januar Parlaungan
author_facet	Siregar, Januar Parlaungan
author_sort	Siregar, Januar Parlaungan
title	Effects of selected treatments on properties of pineapple leaf fibre reinforced high impact polystyrene composites
title_short	Effects of selected treatments on properties of pineapple leaf fibre reinforced high impact polystyrene composites
title_full	Effects of selected treatments on properties of pineapple leaf fibre reinforced high impact polystyrene composites
title_fullStr	Effects of selected treatments on properties of pineapple leaf fibre reinforced high impact polystyrene composites
title_full_unstemmed	Effects of selected treatments on properties of pineapple leaf fibre reinforced high impact polystyrene composites
title_sort	effects of selected treatments on properties of pineapple leaf fibre reinforced high impact polystyrene composites
granting_institution	Universiti Putra Malaysia
publishDate	2011
url	http://psasir.upm.edu.my/id/eprint/42140/7/FK%202011%2039R.pdf
_version_	1747811896674746368

Effects of selected treatments on properties of pineapple leaf fibre reinforced high impact polystyrene composites

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