Properties and biodegradability of low density polyethylene/ thermoplastic soya spent powder blends added spear grass powder as pro-oxidant

Plastic waste is a serious environmental problem and become an enormous challenge to waste management. A high determination to produce eco-friendly polymer has led the researchers to investigate about biodegradable polymers by adding natural polymer into the non-degradable plastic material. Thermopl...

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Format:	Thesis
Language:	English
Subjects:	Biodegradable plastics Biodegradable products Polyolefins Sewage disposal
Online Access:	http://dspace.unimap.edu.my:80/xmlui/bitstream/123456789/77180/1/Page%201-24.pdf http://dspace.unimap.edu.my:80/xmlui/bitstream/123456789/77180/2/Full%20text.pdf http://dspace.unimap.edu.my:80/xmlui/bitstream/123456789/77180/4/Nuradibah.pdf
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spelling	my-unimap-771802022-11-29T08:01:24Z Properties and biodegradability of low density polyethylene/ thermoplastic soya spent powder blends added spear grass powder as pro-oxidant Sam Sung, Ting, Dr. Plastic waste is a serious environmental problem and become an enormous challenge to waste management. A high determination to produce eco-friendly polymer has led the researchers to investigate about biodegradable polymers by adding natural polymer into the non-degradable plastic material. Thermoplastic is a material that produced by incorporating the plasticizer into the natural polymer, ie starch. Therefore in this research, an attempt was made by incorporating protein based natural polymer which was soya spent powder (SSP) into LDPE matrix. This study investigated the influence of glycerol on the properties of blends prepared from low density polyethylene (LDPE) with different SSP content varied from 5 to 25 wt%. Spear grass powder as a natural pro-oxidant (1.5 wt%) has been added into LDPE/SSP and LDPE/TSSP blends. Natural weathering test and soil burial test were performed for 9 months period to determine the potential of this polymer to degrade in different surroundings. As a result, LDPE/TSSP blends showed higher strength and elongation at break (Eb) compared to LDPE/SSP blends after weathering and composting. However, after the addition of spear grass powder, the tensile strength and Eb of LDPE/TSSP blends decreased. Scanning electron microscopy (SEM) micrographs showed the formation of crack, pores and fungus colonization on of LDPE/SSP and LDPE/TSSP blends surfaces. For differential scanning calorimetry (DSC) analysis, LDPE/TSSP blends presented higher crystallinity (15.65% for 25 wt% TSSP) compared to LDPE/SSP blends for the same blends ratio (14.76%). The thermal stability for each blends decreased from 451 °C (for neat LDPE) with an increase of 25 wt% of SSP (269 °C) and TSSP (284 °C) content. Three different strains have been successfully isolated in this study. Aspergillus fumigatus from the genus of Aspergillus encountered the highest percentage increment of cell dry weight (mg) which is 56% through the fermentation process. Universiti Malaysia Perlis (UniMAP) Thesis en http://dspace.unimap.edu.my:80/xmlui/handle/123456789/77180 http://dspace.unimap.edu.my:80/xmlui/bitstream/123456789/77180/3/license.txt 8a4605be74aa9ea9d79846c1fba20a33 http://dspace.unimap.edu.my:80/xmlui/bitstream/123456789/77180/1/Page%201-24.pdf 6f97c3dec9d48b2e23d4aba0db8f4ddb http://dspace.unimap.edu.my:80/xmlui/bitstream/123456789/77180/2/Full%20text.pdf 38f8f34dd7a592d5a90aa0ac078108db http://dspace.unimap.edu.my:80/xmlui/bitstream/123456789/77180/4/Nuradibah.pdf fc6f031127f7cfce1db41521a803adc6 Universiti Malaysia Perlis (UniMAP) Biodegradable plastics Biodegradable products Polyolefins Sewage disposal School of Bioprocess Engineering
institution	Universiti Malaysia Perlis
collection	UniMAP Institutional Repository
language	English
advisor	Sam Sung, Ting, Dr.
topic	Biodegradable plastics Biodegradable products Polyolefins Sewage disposal
spellingShingle	Biodegradable plastics Biodegradable products Polyolefins Sewage disposal Properties and biodegradability of low density polyethylene/ thermoplastic soya spent powder blends added spear grass powder as pro-oxidant
description	Plastic waste is a serious environmental problem and become an enormous challenge to waste management. A high determination to produce eco-friendly polymer has led the researchers to investigate about biodegradable polymers by adding natural polymer into the non-degradable plastic material. Thermoplastic is a material that produced by incorporating the plasticizer into the natural polymer, ie starch. Therefore in this research, an attempt was made by incorporating protein based natural polymer which was soya spent powder (SSP) into LDPE matrix. This study investigated the influence of glycerol on the properties of blends prepared from low density polyethylene (LDPE) with different SSP content varied from 5 to 25 wt%. Spear grass powder as a natural pro-oxidant (1.5 wt%) has been added into LDPE/SSP and LDPE/TSSP blends. Natural weathering test and soil burial test were performed for 9 months period to determine the potential of this polymer to degrade in different surroundings. As a result, LDPE/TSSP blends showed higher strength and elongation at break (Eb) compared to LDPE/SSP blends after weathering and composting. However, after the addition of spear grass powder, the tensile strength and Eb of LDPE/TSSP blends decreased. Scanning electron microscopy (SEM) micrographs showed the formation of crack, pores and fungus colonization on of LDPE/SSP and LDPE/TSSP blends surfaces. For differential scanning calorimetry (DSC) analysis, LDPE/TSSP blends presented higher crystallinity (15.65% for 25 wt% TSSP) compared to LDPE/SSP blends for the same blends ratio (14.76%). The thermal stability for each blends decreased from 451 °C (for neat LDPE) with an increase of 25 wt% of SSP (269 °C) and TSSP (284 °C) content. Three different strains have been successfully isolated in this study. Aspergillus fumigatus from the genus of Aspergillus encountered the highest percentage increment of cell dry weight (mg) which is 56% through the fermentation process.
format	Thesis
title	Properties and biodegradability of low density polyethylene/ thermoplastic soya spent powder blends added spear grass powder as pro-oxidant
title_short	Properties and biodegradability of low density polyethylene/ thermoplastic soya spent powder blends added spear grass powder as pro-oxidant
title_full	Properties and biodegradability of low density polyethylene/ thermoplastic soya spent powder blends added spear grass powder as pro-oxidant
title_fullStr	Properties and biodegradability of low density polyethylene/ thermoplastic soya spent powder blends added spear grass powder as pro-oxidant
title_full_unstemmed	Properties and biodegradability of low density polyethylene/ thermoplastic soya spent powder blends added spear grass powder as pro-oxidant
title_sort	properties and biodegradability of low density polyethylene/ thermoplastic soya spent powder blends added spear grass powder as pro-oxidant
granting_institution	Universiti Malaysia Perlis (UniMAP)
granting_department	School of Bioprocess Engineering
url	http://dspace.unimap.edu.my:80/xmlui/bitstream/123456789/77180/1/Page%201-24.pdf http://dspace.unimap.edu.my:80/xmlui/bitstream/123456789/77180/2/Full%20text.pdf http://dspace.unimap.edu.my:80/xmlui/bitstream/123456789/77180/4/Nuradibah.pdf
_version_	1776104246639329280

Properties and biodegradability of low density polyethylene/ thermoplastic soya spent powder blends added spear grass powder as pro-oxidant

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