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Titolo:
Physical chemistry of organic eutectic and monotectic: Hexamethylbenzene-succinonitrile system
Autore:
Rai, US; Rai, RN;
Indirizzi:
Banaras Hindu Univ, Dept Chem, Varanasi 221005, Uttar Pradesh, India Banaras Hindu Univ Varanasi Uttar Pradesh India 221005 tar Pradesh, India
Titolo Testata:
CHEMISTRY OF MATERIALS
fascicolo: 11, volume: 11, anno: 1999,
pagine: 3031 - 3036
SICI:
0897-4756(199911)11:11<3031:PCOOEA>2.0.ZU;2-6
Fonte:
ISI
Lingua:
ENG
Soggetto:
ADDITION-COMPOUNDS; SOLIDIFICATION; ALLOYS; MELTS;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Engineering, Computing & Technology
Citazioni:
37
Recensione:
Indirizzi per estratti:
Indirizzo: Rai, US Banaras Hindu Univ, Dept Chem, Varanasi 221005, Uttar Pradesh, India Banaras Hindu Univ Varanasi Uttar Pradesh India 221005 esh, India
Citazione:
U.S. Rai e R.N. Rai, "Physical chemistry of organic eutectic and monotectic: Hexamethylbenzene-succinonitrile system", CHEM MATER, 11(11), 1999, pp. 3031-3036

Abstract

A phase diagram of hexamethylbenzene-succinonitrile system, determined by the thaw-melt method, shows the formation of a eutectic and a monotectic with large miscibility gap in the system. The eutectic and the monotectic contain 0.150 and 0.996 mol fraction of succinonitrile, respectively, and the consolute temperature is 111.5 degrees C above the monotectic horizontal, Growth behavior of the eutectic, the monotectic, and the pure components, studied at different undercooling temperatures by measuring the rate of movement of solid-liquid interface in a capillary, suggests that the data obey the square relationship between growth velocity and the undercooling. Using enthalpy effusion data, determined by the DSC method, entropy of fusion, enthalpy of mixing, size of the critical nucleus, interfacial energy, and excess thermodynamic functions were calculated. While the microstructures of the pure components, namely, hexamethylbenzene and succinonitrile show faceted and nonfaceted morphology, respectively, those of the eutectic acid the monotectic give lamellar structures.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 28/09/20 alle ore 04:24:59