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Photocrosslinking of a novel α , ω ‐unsaturated copolyamide: mass spectrometric study on model compounds with benzophenone as photoinitiator
Author(s) -
Mintsa Marion N'Negue,
Lecamp Laurence,
LoutelierBourhis Corinne,
Lange Catherine M.,
Baumgarten Sigrid,
Bunel Claude
Publication year - 2009
Publication title -
rapid communications in mass spectrometry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.528
H-Index - 136
eISSN - 1097-0231
pISSN - 0951-4198
DOI - 10.1002/rcm.4295
Subject(s) - benzophenone , photoinitiator , chemistry , photochemistry , uv curing , polyamide , curing (chemistry) , coating , hydrogen atom abstraction , mass spectrometry , polymer chemistry , polymer , organic chemistry , hydrogen , chromatography , monomer
The aim of this work was to understand the reactions involved in the photocrosslinking processes of a α , ω ‐unsaturated copolyamide foreseen as a new UV‐curable powder coating. The crosslinking reaction was photoinitiated with benzophenone. In this paper, the photochemical reaction between benzophenone and several model compounds was investigated. The model compounds contained functional groups which could be present in copolyamide. The products resulting from UV curing were identified using a combination of high‐resolution mass spectrometry and MS n experiments. The characterization of the products allowed localization of the hydrogen abstraction by the type II photoinitiator during UV curing and, consequently, the determination of the reactive sites of the unsaturated polyamide chain which were involved in the photochemical reaction. Copyright © 2009 John Wiley & Sons, Ltd.