Cover Image

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

Master of Science in Bioprocess Engineering

Saved in:
Bibliographic Details
Main Author: Nuradibah, Mohd Amer
Other Authors: Sam Sung, Ting, Dr.
Format: Thesis
Language:English
Published: Universiti Malaysia Perlis (UniMAP) 2016
Subjects:
Biodegradable plastics
Biodegradable products
Polyolefins
Sewage disposal
Online Access:http://dspace.unimap.edu.my:80/xmlui/handle/123456789/77180
Tags: Add Tag
No Tags, Be the first to tag this record!
id my.unimap-77180
record_format dspace
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 Nuradibah, Mohd Amer Sam Sung, Ting, Dr. Biodegradable plastics Biodegradable products Polyolefins Sewage disposal Master of Science in Bioprocess Engineering 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. 2016 2022-11-24T07:53:21Z 2022-11-24T07:53:21Z Thesis http://dspace.unimap.edu.my:80/xmlui/handle/123456789/77180 en Universiti Malaysia Perlis (UniMAP) Universiti Malaysia Perlis (UniMAP) School of Bioprocess Engineering
institution Universiti Malaysia Perlis
building UniMAP Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Malaysia Perlis
content_source UniMAP Library Digital Repository
url_provider http://dspace.unimap.edu.my/
language English
topic Biodegradable plastics
Biodegradable products
Polyolefins
Sewage disposal
spellingShingle Biodegradable plastics
Biodegradable products
Polyolefins
Sewage disposal
Nuradibah, Mohd Amer
Properties and biodegradability of low density polyethylene/ thermoplastic soya spent powder blends added spear grass powder as pro-oxidant
description Master of Science in Bioprocess Engineering
author2 Sam Sung, Ting, Dr.
author_facet Sam Sung, Ting, Dr.
Nuradibah, Mohd Amer
format Thesis
author Nuradibah, Mohd Amer
author_sort Nuradibah, Mohd Amer
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
publisher Universiti Malaysia Perlis (UniMAP)
publishDate 2016
url http://dspace.unimap.edu.my:80/xmlui/handle/123456789/77180
_version_ 1753972992386269184
score 13.214268

Similar Items