Catalogo Articoli (Spogli Riviste)

OPAC HELP

Titolo:
Radiation effects on the thermal degradation of poly(vinyl chloride) and poly(vinyl alcohol)
Autore:
Zhao, WW; Yamamoto, Y; Tagawa, S;
Indirizzi:
Osaka Univ, Inst Sci & Ind Res, Osaka 5670047, Japan Osaka Univ Osaka Japan 5670047 Inst Sci & Ind Res, Osaka 5670047, Japan
Titolo Testata:
JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY
fascicolo: 17, volume: 36, anno: 1998,
pagine: 3089 - 3095
SICI:
0887-624X(199812)36:17<3089:REOTTD>2.0.ZU;2-V
Fonte:
ISI
Lingua:
ENG
Soggetto:
ELECTRICAL-CONDUCTIVITY; IRRADIATION; POLYVINYL-CHLORIDE); DEHYDROCHLORINATION; MECHANISM; VINYLENE); CHEMISTRY; PRESSURE; POLYMER; FILMS;
Keywords:
radiation; thermal degradation; poly(vinyl chloride); poly(vinyl alcohol);
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
36
Recensione:
Indirizzi per estratti:
Indirizzo: Zhao, WW Osaka Univ, Inst Sci & Ind Res, 8-1 Mihogaoka, Osaka 5670047, Japan Osaka Univ 8-1 Mihogaoka Osaka Japan 5670047 saka 5670047, Japan
Citazione:
W.W. Zhao et al., "Radiation effects on the thermal degradation of poly(vinyl chloride) and poly(vinyl alcohol)", J POL SC PC, 36(17), 1998, pp. 3089-3095

Abstract

Radiation effects on the formation of conjugated double bonds in the thermal degradation of poly(vinyl chloride) (PVC) and poly(vinyl alcohol) (PVA) were investigated. Thin films of PVC and PVA were either irradiated with gamma-rays at ambient temperature (pre-irradiation) and then subjected to thermal treatment, or irradiated at elevated temperatures (in situ irradiation). An extensive enhancement of the thermal degradation was observed for thepre-irradiation of the PVC films, which was more effective than the effectof the in situ irradiation at the same absorption dose. For the PVA degradation, however, the effect of the in situ irradiation was larger than that of the pre-irradiation. The results were explained and related mechanisms were discussed based on radiation-induced chemical reactions and their individual contributions to the thermal degradation behaviors of the two polymers. (C) 1998 John Wiley & Sons, Inc.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 09/07/20 alle ore 19:45:00