Photopolymerization of methyl methacrylate initiated by thioxanthone derivatives : photoinitiation mechanism

The photopolymerization of methyl methacrylate initiated by substituted thioxanthones in the presence of an amine has been investigated. The dependence of the polymerization rates with the amine concentration and the photoinitiation efficiency at a given amine concentration are highly dependent on t...

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Bibliographic Details
Published inPolymer (Guilford) Vol. 41; no. 26; pp. 9103 - 9109
Main Authors CORRALES, T, PEINADO, C, CATALINA, F, NEUMANN, M. G, ALLEN, N. S, RUFS, A. M, ENCINAS, M. V
Format Journal Article
LanguageEnglish
Published Oxford Elsevier 01.12.2000
Subjects
Applied sciences
Exact sciences and technology
Physicochemistry of polymers
Polymerization
Polymers and radiations
Substituent effect
Aminoalcohol
Breakdown initiation
Photopolymerization
Thioxanthene derivatives
Reaction mechanism
Methyl methacrylate polymer
Kinetics
Experimental study
Reaction rate
Solution polymerization
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Summary:The photopolymerization of methyl methacrylate initiated by substituted thioxanthones in the presence of an amine has been investigated. The dependence of the polymerization rates with the amine concentration and the photoinitiation efficiency at a given amine concentration are highly dependent on the ketone structure. The reactivity of the ketone is also highly dependent on the ketone structure. The values of the quenching rate constants show that the initiation efficiency is controlled by the competition between the quenching of the excited states by the monomer and also the amine. (Original abstract - amended)
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
ISSN:0032-3861
1873-2291
DOI:10.1016/S0032-3861(00)00292-5