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A study on degradation of palm-based polyurethane by using Escherichia coli / Nur 'Aisyah Othman

Palm kernel oil-based polyol was successfully synthesized in this study by the transesterification and condensation process which the raw palm kernel oil was mixed with the polyhydric compound. The rigid polyurethane was formed from the reaction of polyol and isocyanates with ratio of 1: 1. The issu...

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Main Author: Othman, Nur 'Aisyah
Format: Student Project
Language:English
Published: 2017
Subjects:
Laboratories. General works
Biodegradation
Online Access:http://ir.uitm.edu.my/id/eprint/41701/1/41701.pdf
http://ir.uitm.edu.my/id/eprint/41701/
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spelling my.uitm.ir.417012021-02-18T05:44:28Z http://ir.uitm.edu.my/id/eprint/41701/ A study on degradation of palm-based polyurethane by using Escherichia coli / Nur 'Aisyah Othman Othman, Nur 'Aisyah Laboratories. General works Biodegradation Palm kernel oil-based polyol was successfully synthesized in this study by the transesterification and condensation process which the raw palm kernel oil was mixed with the polyhydric compound. The rigid polyurethane was formed from the reaction of polyol and isocyanates with ratio of 1: 1. The issue of non¬ biodegradability of petroleum-based polyurethane can be overcome by substituting with the edible plant oil-based polyurethane such as the palm kernel oil-based polyurethane. This type of polyurethane is advantageous compared to petroleum¬ based polyurethane as the process is relatively safe and also simple. The ability of E.coli to degrade polyurethane was determined by Fourier Transform Infrared Spectroscopy (FTIR) analysis, Scanning Electron Microscope (SEM) analysis and percentage weight loss. The percentage weight loss was calculated within 2 weeks with 3 days intervals to identify the effect of different bacterial concentration on the rate of degradation of polyurethane. The results showed an increasing percentage of weight loss with increasing bacterial concentration. The FTIR analysis showed a significant decreased in intensity of ester (C=O) bond peak absorb at 1728 cm-1 as ester is susceptible to be hydrolyzed during degradation process by E.coli. The morphological structure analysis of polyurethane was observed using SEM showing a destruction on the surface of polyurethane after degradation proving that E.coli was able to degrade polyurethane. 2017 Student Project NonPeerReviewed text en http://ir.uitm.edu.my/id/eprint/41701/1/41701.pdf Othman, Nur 'Aisyah (2017) A study on degradation of palm-based polyurethane by using Escherichia coli / Nur 'Aisyah Othman. [Student Project] (Unpublished)
institution Universiti Teknologi Mara
building Tun Abdul Razak Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Teknologi Mara
content_source UiTM Institutional Repository
url_provider http://ir.uitm.edu.my/
language English
topic Laboratories. General works
Biodegradation
spellingShingle Laboratories. General works
Biodegradation
Othman, Nur 'Aisyah
A study on degradation of palm-based polyurethane by using Escherichia coli / Nur 'Aisyah Othman
description Palm kernel oil-based polyol was successfully synthesized in this study by the transesterification and condensation process which the raw palm kernel oil was mixed with the polyhydric compound. The rigid polyurethane was formed from the reaction of polyol and isocyanates with ratio of 1: 1. The issue of non¬ biodegradability of petroleum-based polyurethane can be overcome by substituting with the edible plant oil-based polyurethane such as the palm kernel oil-based polyurethane. This type of polyurethane is advantageous compared to petroleum¬ based polyurethane as the process is relatively safe and also simple. The ability of E.coli to degrade polyurethane was determined by Fourier Transform Infrared Spectroscopy (FTIR) analysis, Scanning Electron Microscope (SEM) analysis and percentage weight loss. The percentage weight loss was calculated within 2 weeks with 3 days intervals to identify the effect of different bacterial concentration on the rate of degradation of polyurethane. The results showed an increasing percentage of weight loss with increasing bacterial concentration. The FTIR analysis showed a significant decreased in intensity of ester (C=O) bond peak absorb at 1728 cm-1 as ester is susceptible to be hydrolyzed during degradation process by E.coli. The morphological structure analysis of polyurethane was observed using SEM showing a destruction on the surface of polyurethane after degradation proving that E.coli was able to degrade polyurethane.
format Student Project
author Othman, Nur 'Aisyah
author_facet Othman, Nur 'Aisyah
author_sort Othman, Nur 'Aisyah
title A study on degradation of palm-based polyurethane by using Escherichia coli / Nur 'Aisyah Othman
title_short A study on degradation of palm-based polyurethane by using Escherichia coli / Nur 'Aisyah Othman
title_full A study on degradation of palm-based polyurethane by using Escherichia coli / Nur 'Aisyah Othman
title_fullStr A study on degradation of palm-based polyurethane by using Escherichia coli / Nur 'Aisyah Othman
title_full_unstemmed A study on degradation of palm-based polyurethane by using Escherichia coli / Nur 'Aisyah Othman
title_sort study on degradation of palm-based polyurethane by using escherichia coli / nur 'aisyah othman
publishDate 2017
url http://ir.uitm.edu.my/id/eprint/41701/1/41701.pdf
http://ir.uitm.edu.my/id/eprint/41701/
_version_ 1692994632217001984
score 13.211869

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