Simple modification measurement of photodegradability of polymers by using photo-induced chemiluminescence technique / Siti Farhana Zakaria and Keith R. Millington

Polymers and organic materials that are exposed to sunlight undergo photooxidation, which leads to deterioration oftheir physical properties. To allow adequate performance under outdoor conditions, synthetic polymers require additives such as antioxidants and UV absorbers. A major problem with optim...

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Main Authors:	Zakaria, Siti Farhana, Millington, Keith R.
Format:	Article
Language:	English
Published:	Research Management Institute (RMI) 2013
Subjects:	Oxidation Free radicals (Chemistry) Chemiluminescence Photochemistry
Online Access:	http://ir.uitm.edu.my/id/eprint/13047/ http://ir.uitm.edu.my/id/eprint/13047/1/AJ_SITI%20FARHANA%20ZAKARIA%20SRJ%2013%201.pdf

id	uitm-13047
recordtype	eprints
spelling	uitm-130472016-05-30T04:34:12Z http://ir.uitm.edu.my/id/eprint/13047/ Simple modification measurement of photodegradability of polymers by using photo-induced chemiluminescence technique / Siti Farhana Zakaria and Keith R. Millington Zakaria, Siti Farhana Millington, Keith R. Oxidation Free radicals (Chemistry) Chemiluminescence Photochemistry Polymers and organic materials that are exposed to sunlight undergo photooxidation, which leads to deterioration oftheir physical properties. To allow adequate performance under outdoor conditions, synthetic polymers require additives such as antioxidants and UV absorbers. A major problem with optimising polymer formulations to maximise their working life span is that accelerated weathering tests are empirical. The conditions differ significantly from real weathering situations, and samples require lengthy irradiation period. Degradation may not be apparent in the early stages of exposure, although this is when products such as hydroperoxides are formed which later cause acceleration ofoxidation. Asimple way ofquantifying the number of free radicals presents in organic materials following exposure to light or heat is by measuring chemiluminescence (CL) emission. Most polymers emit CL when they undergo oxidative degradation, and it originates from the bimolecular reaction of macroperoxy radicals which creates an excited carbonyl. Research Management Institute (RMI) 2013 Article PeerReviewed text en http://ir.uitm.edu.my/id/eprint/13047/1/AJ_SITI%20FARHANA%20ZAKARIA%20SRJ%2013%201.pdf Zakaria, Siti Farhana and Millington, Keith R. (2013) Simple modification measurement of photodegradability of polymers by using photo-induced chemiluminescence technique / Siti Farhana Zakaria and Keith R. Millington. Scientific Research Journal, 10 (2). pp. 51-61. ISSN 1675-7009
repository_type	Digital Repository
institution_category	Local University
institution	Universiti Teknologi MARA
building	UiTM Institutional Repository
collection	Online Access
language	English
topic	Oxidation Free radicals (Chemistry) Chemiluminescence Photochemistry
spellingShingle	Oxidation Free radicals (Chemistry) Chemiluminescence Photochemistry Zakaria, Siti Farhana Millington, Keith R. Simple modification measurement of photodegradability of polymers by using photo-induced chemiluminescence technique / Siti Farhana Zakaria and Keith R. Millington
description	Polymers and organic materials that are exposed to sunlight undergo photooxidation, which leads to deterioration oftheir physical properties. To allow adequate performance under outdoor conditions, synthetic polymers require additives such as antioxidants and UV absorbers. A major problem with optimising polymer formulations to maximise their working life span is that accelerated weathering tests are empirical. The conditions differ significantly from real weathering situations, and samples require lengthy irradiation period. Degradation may not be apparent in the early stages of exposure, although this is when products such as hydroperoxides are formed which later cause acceleration ofoxidation. Asimple way ofquantifying the number of free radicals presents in organic materials following exposure to light or heat is by measuring chemiluminescence (CL) emission. Most polymers emit CL when they undergo oxidative degradation, and it originates from the bimolecular reaction of macroperoxy radicals which creates an excited carbonyl.
format	Article
author	Zakaria, Siti Farhana Millington, Keith R.
author_facet	Zakaria, Siti Farhana Millington, Keith R.
author_sort	Zakaria, Siti Farhana
title	Simple modification measurement of photodegradability of polymers by using photo-induced chemiluminescence technique / Siti Farhana Zakaria and Keith R. Millington
title_short	Simple modification measurement of photodegradability of polymers by using photo-induced chemiluminescence technique / Siti Farhana Zakaria and Keith R. Millington
title_full	Simple modification measurement of photodegradability of polymers by using photo-induced chemiluminescence technique / Siti Farhana Zakaria and Keith R. Millington
title_fullStr	Simple modification measurement of photodegradability of polymers by using photo-induced chemiluminescence technique / Siti Farhana Zakaria and Keith R. Millington
title_full_unstemmed	Simple modification measurement of photodegradability of polymers by using photo-induced chemiluminescence technique / Siti Farhana Zakaria and Keith R. Millington
title_sort	simple modification measurement of photodegradability of polymers by using photo-induced chemiluminescence technique / siti farhana zakaria and keith r. millington
publisher	Research Management Institute (RMI)
publishDate	2013
url	http://ir.uitm.edu.my/id/eprint/13047/ http://ir.uitm.edu.my/id/eprint/13047/1/AJ_SITI%20FARHANA%20ZAKARIA%20SRJ%2013%201.pdf
first_indexed	2023-09-18T22:49:45Z
last_indexed	2023-09-18T22:49:45Z
_version_	1777417464157569024

Simple modification measurement of photodegradability of polymers by using photo-induced chemiluminescence technique / Siti Farhana Zakaria and Keith R. Millington

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