New three-component initiation systems in UV curing: A time-resolved laser-spectroscopy investigation

An investigation of the excited state processes in a three‐component initiating system based on a new ketone/amine/onium salt combination has been carried out for the first time. The results obtained through time‐resolved laser spectroscopy and the data gained in radical photopolymerization experime...

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Bibliographic Details
Published in:Journal of polymer science. Part A, Polymer chemistry Polymer chemistry, 1993-08, Vol.31 (9), p.2245-2248
Main Authors: Fouassier, Jean-Pierre, Ruhlmann, Denis, Takimoto, Yasuyuki, Harada, Masahiko, Kawabata, Masami
Format: Article
Language:English
Subjects:
Applied sciences
Exact sciences and technology
ketones
laser spectroscopy
onium salts
photopolymerization
Physicochemistry of polymers
Polymerization
Polymers and radiations
radical photoinitiators
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Summary:An investigation of the excited state processes in a three‐component initiating system based on a new ketone/amine/onium salt combination has been carried out for the first time. The results obtained through time‐resolved laser spectroscopy and the data gained in radical photopolymerization experiments suggest that the addition of an onium salt to the usual ketone/amine system mostly result in a decrease of the termination reaction of the growing macromolecular chains, thus allowing an increase of the rate of polymerization. © 1993 John Wiley & Sons, Inc.
ISSN:0887-624X
1099-0518
DOI:10.1002/pola.1993.080310907