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Titolo:
Thermal properties of a thermoplastic polyimide blend
Autore:
Goodwin, AA;
Indirizzi:
Monash Univ, Clayton, Vic 3168, Australia Monash Univ Clayton Vic Australia 3168 Univ, Clayton, Vic 3168, Australia
Titolo Testata:
JOURNAL OF APPLIED POLYMER SCIENCE
fascicolo: 4, volume: 72, anno: 1999,
pagine: 543 - 552
SICI:
0021-8995(19990425)72:4<543:TPOATP>2.0.ZU;2-0
Fonte:
ISI
Lingua:
ENG
Soggetto:
DIELECTRIC-RELAXATION SPECTROSCOPY; LIQUID-CRYSTALLINE POLYMER; POLY(ETHER IMIDE) BLENDS; POLY(ARYL ETHER KETONES); NEW-TPI; ENTHALPY RELAXATIONS; GLASS-TRANSITION; MISCIBILITY; POLYCARBONATE; TEMPERATURE;
Keywords:
thermoplastic polyimide; poly(ether imide); thermal properties; physical ageing;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Engineering, Computing & Technology
Citazioni:
34
Recensione:
Indirizzi per estratti:
Indirizzo: Goodwin, AA Boral Plasterboard, Port Melbourne, Vic 3207, Australia Boral Plasterboard Port Melbourne Vic Australia 3207 ustralia
Citazione:
A.A. Goodwin, "Thermal properties of a thermoplastic polyimide blend", J APPL POLY, 72(4), 1999, pp. 543-552

Abstract

Differential scanning calorimetry and dynamic mechanical analysis of blends of a new thermoplastic polyimide (TPI) and poly(ether imide) (PEI) have confirmed the full miscibility of the system over the whole composition range. Annealing of the blends above the glass transition temperature of TPI, but below its crystallization temperature, did not produce a shift in the glass transition, while physical ageing of the annealed blends also failed toreveal any indication of phase separation. The rate of crystallization of TPI was slowed by the addition of PEI, and the temperature of the maximum crystallization rate shifted upwards. The beta-relaxation behavior of the blends followed a linear trend between the response of the component polymers, while the low-temperature gamma-relaxation was unchanged by blending. Thetime scale of physical ageing of the blends did not behave in a linear fashion, and the enthalpy loss on ageing also deviated from the average. (C) 1999 John Wiley & Sons, Inc.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 27/09/20 alle ore 22:28:38