Injection molded silane crosslinkable rice straw/high density polyethlene biocomposite

A formulation was designed to produce silane crosslinked rice straw/High Density Polyethylene (RSPE) compound suitable for injection molding process. The formulation consist of HDPE as the base polymer, rice straw as the filler, processing aids and a mixture of crosslink chemicals. Crosslink chemica...

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Main Author:	Andenan, Nurnadia
Format:	Thesis
Language:	English
Published:	2010
Subjects:	TP Chemical technology
Online Access:	http://eprints.utm.my/id/eprint/32806/5/NadiaAndenanMFKK2010.pdf
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spelling	my-utm-ep.328062017-09-20T06:55:16Z Injection molded silane crosslinkable rice straw/high density polyethlene biocomposite 2010-10 Andenan, Nurnadia TP Chemical technology A formulation was designed to produce silane crosslinked rice straw/High Density Polyethylene (RSPE) compound suitable for injection molding process. The formulation consist of HDPE as the base polymer, rice straw as the filler, processing aids and a mixture of crosslink chemicals. Crosslink chemicals consist of vinyltrimethoxysilane (VTMO) as crosslinking agent, dicumyl peroxide (DCP) as the initiator and dibutyltin dilaurate (DBTL) as the condensation catalyst. The rice straw was oven dried at 70ºC for 24 hours, grinded and followed by sieved. A counter rotating twin shaft high speed mixer was utilized to mix the rice straw, HDPE and the processing aids. The blends were then compounded on twin screw extruder. Test specimens were prepared via injection molding process followed by oven cured at 90ºC. Fourier Transform Infra Red (FTIR) was used to determine the chemical functional group involved in the crosslinking reaction. Degree of crosslinking in the silane crosslinked compounds was measured by determining the gel content. Thermal properties were analyzed on the Differential Scanning Calorimetry (DSC) for the melt temperature whereas Thermogravimetry Analysis (TGA) for its thermal stability behavior. The degree of crosslinking in RSPE increased with an increased in VTMO and DCP concentration. The results from FTIR showed the presence of Si-O-Si bond and Si-O-C indicative of crosslinks formation. Thermal stability of the compound illustrated that the crosslinked RSPE was more stable than the uncrosslinked RSPE while the melting point was unchanged. Tensile strength and flexural strength improved after crosslinking and increased with the amount of VTMO and DCP, whilst impact strength showed an optimum value with respect to crosslink chemicals composition. The concentration of 3 phr VTMO, 0.5 PHR dcp AND 0.015 phr DBTL was the optimum crosslinked chemical composition to produce the crosslinked RSPE, significant properties enhancement. 2010-10 Thesis http://eprints.utm.my/id/eprint/32806/ http://eprints.utm.my/id/eprint/32806/5/NadiaAndenanMFKK2010.pdf application/pdf en public masters Universiti Teknologi Malaysia, Faculty of Chemical Engineering Faculty of Chemical Engineering
institution	Universiti Teknologi Malaysia
collection	UTM Institutional Repository
language	English
topic	TP Chemical technology
spellingShingle	TP Chemical technology Andenan, Nurnadia Injection molded silane crosslinkable rice straw/high density polyethlene biocomposite
description	A formulation was designed to produce silane crosslinked rice straw/High Density Polyethylene (RSPE) compound suitable for injection molding process. The formulation consist of HDPE as the base polymer, rice straw as the filler, processing aids and a mixture of crosslink chemicals. Crosslink chemicals consist of vinyltrimethoxysilane (VTMO) as crosslinking agent, dicumyl peroxide (DCP) as the initiator and dibutyltin dilaurate (DBTL) as the condensation catalyst. The rice straw was oven dried at 70ºC for 24 hours, grinded and followed by sieved. A counter rotating twin shaft high speed mixer was utilized to mix the rice straw, HDPE and the processing aids. The blends were then compounded on twin screw extruder. Test specimens were prepared via injection molding process followed by oven cured at 90ºC. Fourier Transform Infra Red (FTIR) was used to determine the chemical functional group involved in the crosslinking reaction. Degree of crosslinking in the silane crosslinked compounds was measured by determining the gel content. Thermal properties were analyzed on the Differential Scanning Calorimetry (DSC) for the melt temperature whereas Thermogravimetry Analysis (TGA) for its thermal stability behavior. The degree of crosslinking in RSPE increased with an increased in VTMO and DCP concentration. The results from FTIR showed the presence of Si-O-Si bond and Si-O-C indicative of crosslinks formation. Thermal stability of the compound illustrated that the crosslinked RSPE was more stable than the uncrosslinked RSPE while the melting point was unchanged. Tensile strength and flexural strength improved after crosslinking and increased with the amount of VTMO and DCP, whilst impact strength showed an optimum value with respect to crosslink chemicals composition. The concentration of 3 phr VTMO, 0.5 PHR dcp AND 0.015 phr DBTL was the optimum crosslinked chemical composition to produce the crosslinked RSPE, significant properties enhancement.
format	Thesis
qualification_level	Master's degree
author	Andenan, Nurnadia
author_facet	Andenan, Nurnadia
author_sort	Andenan, Nurnadia
title	Injection molded silane crosslinkable rice straw/high density polyethlene biocomposite
title_short	Injection molded silane crosslinkable rice straw/high density polyethlene biocomposite
title_full	Injection molded silane crosslinkable rice straw/high density polyethlene biocomposite
title_fullStr	Injection molded silane crosslinkable rice straw/high density polyethlene biocomposite
title_full_unstemmed	Injection molded silane crosslinkable rice straw/high density polyethlene biocomposite
title_sort	injection molded silane crosslinkable rice straw/high density polyethlene biocomposite
granting_institution	Universiti Teknologi Malaysia, Faculty of Chemical Engineering
granting_department	Faculty of Chemical Engineering
publishDate	2010
url	http://eprints.utm.my/id/eprint/32806/5/NadiaAndenanMFKK2010.pdf
_version_	1747816064989790208

Injection molded silane crosslinkable rice straw/high density polyethlene biocomposite

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