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Titolo:
RATE ENHANCEMENT OF AMINES IN THE PHOTOPOLYMERIZATION OF METHYL-METHACRYLATE UNDER OXYGEN
Autore:
SATO R; KURIHARA T; TAKEISHI M;
Indirizzi:
YAMAGATA UNIV,DEPT MAT SCI & ENGN YONEZAWA YAMAGATA 992 JAPAN
Titolo Testata:
Polymer international
fascicolo: 2, volume: 47, anno: 1998,
pagine: 159 - 164
SICI:
0959-8103(1998)47:2<159:REOAIT>2.0.ZU;2-D
Fonte:
ISI
Lingua:
ENG
Soggetto:
YLIDE;
Keywords:
METHYL METHACRYLATE; PHOTOPOLYMERIZATION; CHARGE-TRANSFER COMPLEX; AMINE; OXYGEN;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
15
Recensione:
Indirizzi per estratti:
Citazione:
R. Sato et al., "RATE ENHANCEMENT OF AMINES IN THE PHOTOPOLYMERIZATION OF METHYL-METHACRYLATE UNDER OXYGEN", Polymer international, 47(2), 1998, pp. 159-164

Abstract

The photopolymerization of methyl methacrylate was accelerated by amines such as N,N-dimethylbenzylamine, triethylamine, and diethylamine under nitrogen, in which additional initiating radicals were generated by the reaction of the amines with excited MMA. Enhanced rates were observed under oxygen for this photopolymerization in the presence of amines. Because UV spectra of the amines under oxygen indicated that theamines form charge-transfer complexes with oxygen, the rate enhancement was ascribed to photodecomposition of complexes that yield radical species. Molecular weights of polymers obtained in the photopolymerization in the presence of amines decreased under oxygen, supporting the assumed mechanism. (C) 1998 Society of Chemical Industry.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 28/11/20 alle ore 15:23:24