Characterization of thermoset biopolymer in thermoplastic of low and high density polyethylene upon uv irradiation

As the economy achieves global status, many factors regarding the competitiveness of a nation come under investigation. More recently, together with important areas such as technology advancement and technology transfer, issues related to sustainable development and environment preservation are rece...

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Main Author:	Mohd Salim, Nurul Syamimi
Format:	Thesis
Language:	English English English
Published:	2017
Subjects:	TP Chemical technology TP1080-1185 Polymers and polymer manufacture
Online Access:	http://eprints.uthm.edu.my/9981/2/24p%20NURUL%20SYAMIMI%20MOHD%20SALIM.pdf http://eprints.uthm.edu.my/9981/1/NURUL%20SYAMIMI%20MOHD%20SALIM%20COPYRIGHT%20DECLARATION.pdf http://eprints.uthm.edu.my/9981/3/NURUL%20SYAMIMI%20MOHD%20SALIM%20WATERMARK.pdf
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spelling	my-uthm-ep.99812023-09-13T07:34:03Z Characterization of thermoset biopolymer in thermoplastic of low and high density polyethylene upon uv irradiation 2017-07 Mohd Salim, Nurul Syamimi TP Chemical technology TP1080-1185 Polymers and polymer manufacture As the economy achieves global status, many factors regarding the competitiveness of a nation come under investigation. More recently, together with important areas such as technology advancement and technology transfer, issues related to sustainable development and environment preservation are receiving increasing attention from the world community. Blends of BioPolymer (BP) and thermoplastic polyethylene (LDPE and HDPE) may contribute to make recycling more economically attractive. In this study, the monomer is mixed with flexible isocynate as a crosslinker, known as BioPolymer (BP). The BP were hand mixed with LDPE or HDPE with propotion ratio of 5%, 10%, 15%, 20%, 25% and 30%. wt/wt of thermoplastic. The melt flow index (MFI) were indicated that the processing temperature is the same for both blends which is 190 °C. The aim of this work is to fabricate and study the processibility of BP/LDPE and BP/HDPE blends using injection molding. Futhermore, Ultra-violet (UV) Accelerated weathering test up were conducted at 500 hours, l 000 hours, 1500 hours, 2000 hours, 2500 hours and 3000 hours. The blends yielded tensile strength, percentage of elongation at break and young's modulus is very dependent on their composition ratio of BP with thermoplastic. The tensile strength increased at 500 hours UV irradiation exposure with BP/LOPE is 10.55 Mpa. This is attributed from further crosslink between BP and thermoplastic LDPE. With the BP/LOPE is 67.64 % which diferent from BP/HDPE with the highest elongation of 53.09 % on virgin HOPE. While elongation at break and young's modulus is found to decrease with increases of UV irradiation hours. The decrement of tensile strength and young's modulus after UV exposure is due to the occurrence of the chain breaking process ( chain scission) of carbon-carbon backbone as a result of photo-oxidation. In conclusion, BP content and UV irradiation time play significant roles in controlling mechanical properties of the BP-blended with LDPE and HOPE synthetic polymer, thus providing the opportunity to modulate polymer properties 2017-07 Thesis http://eprints.uthm.edu.my/9981/ http://eprints.uthm.edu.my/9981/2/24p%20NURUL%20SYAMIMI%20MOHD%20SALIM.pdf text en public http://eprints.uthm.edu.my/9981/1/NURUL%20SYAMIMI%20MOHD%20SALIM%20COPYRIGHT%20DECLARATION.pdf text en staffonly http://eprints.uthm.edu.my/9981/3/NURUL%20SYAMIMI%20MOHD%20SALIM%20WATERMARK.pdf text en validuser mphil masters Universiti Tun Hussein Onn Malaysia Fakulti Kejuruteraan Mekanikal dan Pembuatan
institution	Universiti Tun Hussein Onn Malaysia
collection	UTHM Institutional Repository
language	English English English
topic	TP Chemical technology TP1080-1185 Polymers and polymer manufacture
spellingShingle	TP Chemical technology TP1080-1185 Polymers and polymer manufacture Mohd Salim, Nurul Syamimi Characterization of thermoset biopolymer in thermoplastic of low and high density polyethylene upon uv irradiation
description	As the economy achieves global status, many factors regarding the competitiveness of a nation come under investigation. More recently, together with important areas such as technology advancement and technology transfer, issues related to sustainable development and environment preservation are receiving increasing attention from the world community. Blends of BioPolymer (BP) and thermoplastic polyethylene (LDPE and HDPE) may contribute to make recycling more economically attractive. In this study, the monomer is mixed with flexible isocynate as a crosslinker, known as BioPolymer (BP). The BP were hand mixed with LDPE or HDPE with propotion ratio of 5%, 10%, 15%, 20%, 25% and 30%. wt/wt of thermoplastic. The melt flow index (MFI) were indicated that the processing temperature is the same for both blends which is 190 °C. The aim of this work is to fabricate and study the processibility of BP/LDPE and BP/HDPE blends using injection molding. Futhermore, Ultra-violet (UV) Accelerated weathering test up were conducted at 500 hours, l 000 hours, 1500 hours, 2000 hours, 2500 hours and 3000 hours. The blends yielded tensile strength, percentage of elongation at break and young's modulus is very dependent on their composition ratio of BP with thermoplastic. The tensile strength increased at 500 hours UV irradiation exposure with BP/LOPE is 10.55 Mpa. This is attributed from further crosslink between BP and thermoplastic LDPE. With the BP/LOPE is 67.64 % which diferent from BP/HDPE with the highest elongation of 53.09 % on virgin HOPE. While elongation at break and young's modulus is found to decrease with increases of UV irradiation hours. The decrement of tensile strength and young's modulus after UV exposure is due to the occurrence of the chain breaking process ( chain scission) of carbon-carbon backbone as a result of photo-oxidation. In conclusion, BP content and UV irradiation time play significant roles in controlling mechanical properties of the BP-blended with LDPE and HOPE synthetic polymer, thus providing the opportunity to modulate polymer properties
format	Thesis
qualification_name	Master of Philosophy (M.Phil.)
qualification_level	Master's degree
author	Mohd Salim, Nurul Syamimi
author_facet	Mohd Salim, Nurul Syamimi
author_sort	Mohd Salim, Nurul Syamimi
title	Characterization of thermoset biopolymer in thermoplastic of low and high density polyethylene upon uv irradiation
title_short	Characterization of thermoset biopolymer in thermoplastic of low and high density polyethylene upon uv irradiation
title_full	Characterization of thermoset biopolymer in thermoplastic of low and high density polyethylene upon uv irradiation
title_fullStr	Characterization of thermoset biopolymer in thermoplastic of low and high density polyethylene upon uv irradiation
title_full_unstemmed	Characterization of thermoset biopolymer in thermoplastic of low and high density polyethylene upon uv irradiation
title_sort	characterization of thermoset biopolymer in thermoplastic of low and high density polyethylene upon uv irradiation
granting_institution	Universiti Tun Hussein Onn Malaysia
granting_department	Fakulti Kejuruteraan Mekanikal dan Pembuatan
publishDate	2017
url	http://eprints.uthm.edu.my/9981/2/24p%20NURUL%20SYAMIMI%20MOHD%20SALIM.pdf http://eprints.uthm.edu.my/9981/1/NURUL%20SYAMIMI%20MOHD%20SALIM%20COPYRIGHT%20DECLARATION.pdf http://eprints.uthm.edu.my/9981/3/NURUL%20SYAMIMI%20MOHD%20SALIM%20WATERMARK.pdf
_version_	1783728979475169280

Characterization of thermoset biopolymer in thermoplastic of low and high density polyethylene upon uv irradiation

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