Ammonium heptamolybdate-poly(vinylpyrrolidone)-water system / Ostroushko AA,Sennikov MY // RUSSIAN JOURNAL OF INORGANIC CHEMISTRY. - 2003. - V. 48, l. 4. - P. 572-577.

ISSN/EISSN:

0036-0236 / нет данных

Type:

Article

Abstract:

Phase relations in the ammonium heptamolybdate-poly(vinylpyrrolidone)-water system have been studied. An isothermal section through the phase diagram at room temperature and a fragment of the composition-temperature diagram have been mapped. A combination of two types of phase separation has been found: amorphous-amorphous (yielding two liquid phases) and amorphous-crystalline (with separation of salt crystals) with a lower, and an upper, critical solution point, respectively. A field of homogeneous polymer-salt solutions exists in the system; the field widens in the region rich in the polymer and water when the system is exposed to light. The density, viscosity, and refractive index have been studied as functions of concentration. The existence boundaries of the homogeneous solution field determined in various ways are compared with one another. The probability of existence of mesomorphic entities here is lower than in the ammonium molybdatepoly(vinyl alcohol)-water system, because poly(vinylpyrrolidone) is a nongelling amorphous polymer.

Author keywords:

нет данных

DOI:

нет данных

Web of Science ID:

ISI:000182630200019

Соавторы в МНС:

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Другие поля

Поле	Значение
Month	APR
Publisher	INTERPERIODICA
Address	PO BOX 1831, BIRMINGHAM, AL 35201-1831 USA
Language	English
Research-Areas	Chemistry
Web-of-Science-Categories	Chemistry, Inorganic \& Nuclear
Number-of-Cited-References	11
Journal-ISO	Russ. J. Inorg. Chem.
Doc-Delivery-Number	674GZ