KINETICS OF PHASE-SEPARATION IN COLLOIDS .2. NONLINEAR EVOLUTION OF A METASTABLE COLLOID / BUYEVICH YA,IVANOV AO // PHYSICA A. - 1993. - V. 193, l. 2. - P. 221-240.

ISSN/EISSN:

0378-4371 / нет данных

Type:

Article

Abstract:

We study the evolution of a system of dropwise aggregates suspended in a macroscopically homogeneous metastable colloid with account of both the reduction in metastability (the decrease in the parent colloid supersaturation) and the continuing initiation of new nuclei in the metastable surroundings. The growing aggregates are distributed over size and the distribution density is governed by an equation of the Fokker-Planck type with allowance for variations in the growth rate of a single aggregate. A complementary equation relates the supersaturation to the total rate of absorption of colloidal particles by the aggregates. A method of solving those equations is worked out. It permits the supersaturation and diverse characteristics of the distribution density to be found as functions of time. The former quantity is monotonously declining to zero and the dispersion of the latter one is either decreasing or increasing with time depending on the level of random fluctuations of the growth rate. If the fluctuations are absent, the evolving system of the aggregates is tending to a monodisperse one, what calls in question the validity of underlying assumptions inherent to the classical theory of Ostwald ripening.

Author keywords:

BATCH CRYSTALLIZATION; NUCLEATION

DOI:

10.1016/0378-4371(93)90027-2

Web of Science ID:

ISI:A1993KQ10800002

Соавторы в МНС:

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Другие поля

Поле	Значение
Month	MAR 1
Publisher	ELSEVIER SCIENCE BV
Address	PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
Language	English
Keywords-Plus	BATCH CRYSTALLIZATION; NUCLEATION
Research-Areas	Physics
Web-of-Science-Categories	Physics, Multidisciplinary
ResearcherID-Numbers	Ivanov, Alexey/E-4442-2011
ORCID-Numbers	Ivanov, Alexey/0000-0001-8239-4039
Number-of-Cited-References	31
Usage-Count-Last-180-days	1
Usage-Count-Since-2013	4
Journal-ISO	Physica A
Doc-Delivery-Number	KQ108