Investigation into the photolytic stability of RAFT agents and the implications for photopolymerization reactions

McKenzie, TG; Da Costa, LPM; Fu, Q; Dunstan, DE; Qiao, GG

Investigation into the photolytic stability of RAFT agents and the implications for photopolymerization reactions

McKenzie, TG Da Costa, LPM Fu, Q

Dunstan, DE Qiao, GG

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Publisher:: ROYAL SOC CHEMISTRY
Publication Type:: Journal Article
Citation:: Polymer Chemistry, 2016, 7, (25), pp. 4246-4253
Issue Date:: 2016-07-07

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Field	Value	Language
dc.contributor.author	McKenzie, TG
dc.contributor.author	Da Costa, LPM
dc.contributor.author	Fu, Q https://orcid.org/0000-0002-4012-330X
dc.contributor.author	Dunstan, DE
dc.contributor.author	Qiao, GG
dc.date.accessioned	2022-08-15T23:09:09Z
dc.date.available	2022-08-15T23:09:09Z
dc.date.issued	2016-07-07
dc.identifier.citation	Polymer Chemistry, 2016, 7, (25), pp. 4246-4253
dc.identifier.issn	1759-9954
dc.identifier.issn	1759-9962
dc.identifier.uri	http://hdl.handle.net/10453/160276
dc.description.abstract	The photolytic stability of various RAFT agents (i.e., thiocarbonylthio-containing compounds) under irradiation from a blue LED light source has been investigated. The effect and implications of efficient photo-fragmentation and potential photo-degradation with regard to their performance in photopolymerization reactions is reported. The stability is found to depend strongly on the structure of the fragmenting (R-) group and the reactivity of the carbon-centered radical formed following photolytic cleavage. This is proposed to be due to the competitive rates of radical recombination and thiyl radical degradation, and has implications on the choice of monomer (as monomer propagation requires re-initiation of the oligomeric/polymeric RAFT agent). These findings can provide guidelines and increase understanding when conducting a photopolymerization employing thiocarbonylthio RAFT agents.
dc.language	English
dc.publisher	ROYAL SOC CHEMISTRY
dc.relation.ispartof	Polymer Chemistry
dc.relation.isbasedon	10.1039/c6py00808a
dc.rights	info:eu-repo/semantics/closedAccess
dc.subject	0303 Macromolecular and Materials Chemistry, 0307 Theoretical and Computational Chemistry
dc.title	Investigation into the photolytic stability of RAFT agents and the implications for photopolymerization reactions
dc.type	Journal Article
utslib.citation.volume	7
utslib.for	0303 Macromolecular and Materials Chemistry
utslib.for	0307 Theoretical and Computational Chemistry
pubs.organisational-group	/University of Technology Sydney
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology/School of Civil and Environmental Engineering
pubs.organisational-group	/University of Technology Sydney/Strength - CTWW - Centre for Technology in Water and Wastewater Treatment
utslib.copyright.status	closed_access	*
dc.date.updated	2022-08-15T23:09:07Z
pubs.issue	25
pubs.publication-status	Published
pubs.volume	7
utslib.citation.issue	25

Abstract:

The photolytic stability of various RAFT agents (i.e., thiocarbonylthio-containing compounds) under irradiation from a blue LED light source has been investigated. The effect and implications of efficient photo-fragmentation and potential photo-degradation with regard to their performance in photopolymerization reactions is reported. The stability is found to depend strongly on the structure of the fragmenting (R-) group and the reactivity of the carbon-centered radical formed following photolytic cleavage. This is proposed to be due to the competitive rates of radical recombination and thiyl radical degradation, and has implications on the choice of monomer (as monomer propagation requires re-initiation of the oligomeric/polymeric RAFT agent). These findings can provide guidelines and increase understanding when conducting a photopolymerization employing thiocarbonylthio RAFT agents.

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http://hdl.handle.net/10453/160276