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Anti-Freeze Stabilizer System Based On Azidated Glycerol For Natural Rubber Latex

Natural rubber latex (NRL) normally transported to any destination in colloid / liquid form. It requires large storage containers such as drums and the probability of latex leakage during transportation to happen is higher. To prevent the latex spillage, the liquid form of NRL was transform into...

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Main Author: Abd Samat, Siti Nuraya
Format: Thesis
Language:English
Published: 2022
Subjects:
T1-995 Technology(General)
Online Access:http://eprints.usm.my/59802/1/24%20Pages%20from%20SITI%20NURAYA%20BINTI%20ABD%20SAMAT.pdf
http://eprints.usm.my/59802/
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spelling my.usm.eprints.59802 http://eprints.usm.my/59802/ Anti-Freeze Stabilizer System Based On Azidated Glycerol For Natural Rubber Latex Abd Samat, Siti Nuraya T1-995 Technology(General) Natural rubber latex (NRL) normally transported to any destination in colloid / liquid form. It requires large storage containers such as drums and the probability of latex leakage during transportation to happen is higher. To prevent the latex spillage, the liquid form of NRL was transform into solid / frozen latex by freezing method. However, negatively charged protein layer that stabilized NRL particles may be broken by ice crystals during freezing and these destabilized NRL particles will form big lump after thawing. So, this study proposed a new low temperature of stabilizer named azidated glycerol (AG) that will be incorporated in NRL liquid before freezing process. It is expected that AG able to act as colloid stabilizer thus preventing the coalescence of rubber participles from occurring after thawing. AG was prepared by a chemical reaction of pure glycerol with sodium azide. The resulting AG was then added into NRL colloid as an anti-freeze stabilizer to prevent the rubber latex particles from coalesces at a lower temperature. NRL containing AG was then freeze at a temperature of -4 °C. After 24 hours of freezing, the frozen latex was thaw at ambient temperature for 1 hour followed by heating in a water bath at 40 °C for another 1 hour. 2022-09 Thesis NonPeerReviewed application/pdf en http://eprints.usm.my/59802/1/24%20Pages%20from%20SITI%20NURAYA%20BINTI%20ABD%20SAMAT.pdf Abd Samat, Siti Nuraya (2022) Anti-Freeze Stabilizer System Based On Azidated Glycerol For Natural Rubber Latex. PhD thesis, Perpustakaan Hamzah Sendut.
institution Universiti Sains Malaysia
building Hamzah Sendut Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Sains Malaysia
content_source USM Institutional Repository
url_provider http://eprints.usm.my/
language English
topic T1-995 Technology(General)
spellingShingle T1-995 Technology(General)
Abd Samat, Siti Nuraya
Anti-Freeze Stabilizer System Based On Azidated Glycerol For Natural Rubber Latex
description Natural rubber latex (NRL) normally transported to any destination in colloid / liquid form. It requires large storage containers such as drums and the probability of latex leakage during transportation to happen is higher. To prevent the latex spillage, the liquid form of NRL was transform into solid / frozen latex by freezing method. However, negatively charged protein layer that stabilized NRL particles may be broken by ice crystals during freezing and these destabilized NRL particles will form big lump after thawing. So, this study proposed a new low temperature of stabilizer named azidated glycerol (AG) that will be incorporated in NRL liquid before freezing process. It is expected that AG able to act as colloid stabilizer thus preventing the coalescence of rubber participles from occurring after thawing. AG was prepared by a chemical reaction of pure glycerol with sodium azide. The resulting AG was then added into NRL colloid as an anti-freeze stabilizer to prevent the rubber latex particles from coalesces at a lower temperature. NRL containing AG was then freeze at a temperature of -4 °C. After 24 hours of freezing, the frozen latex was thaw at ambient temperature for 1 hour followed by heating in a water bath at 40 °C for another 1 hour.
format Thesis
author Abd Samat, Siti Nuraya
author_facet Abd Samat, Siti Nuraya
author_sort Abd Samat, Siti Nuraya
title Anti-Freeze Stabilizer System Based On Azidated Glycerol For Natural Rubber Latex
title_short Anti-Freeze Stabilizer System Based On Azidated Glycerol For Natural Rubber Latex
title_full Anti-Freeze Stabilizer System Based On Azidated Glycerol For Natural Rubber Latex
title_fullStr Anti-Freeze Stabilizer System Based On Azidated Glycerol For Natural Rubber Latex
title_full_unstemmed Anti-Freeze Stabilizer System Based On Azidated Glycerol For Natural Rubber Latex
title_sort anti-freeze stabilizer system based on azidated glycerol for natural rubber latex
publishDate 2022
url http://eprints.usm.my/59802/1/24%20Pages%20from%20SITI%20NURAYA%20BINTI%20ABD%20SAMAT.pdf
http://eprints.usm.my/59802/
_version_ 1792151163567603712
score 13.211869

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