CONTROLLABLE CHANGES IN THE POROUS STRUCTURE OF POLYMERIC NUCLEAR TRACK MEMBRANES / OVCHINNIKOV VV,SELEZNEV VD,SURGUCHEV VV,KUZNETSOV VI // JOURNAL OF MEMBRANE SCIENCE. - 1991. - V. 55, l. 3. - P. 299-310.

ISSN/EISSN:

0376-7388 / нет данных

Type:

Article; Proceedings Paper

Abstract:

As has been shown earlier, by applying external tensile stresses to a polymeric membrane it is possible for the membrane as a whole to be deformed elastically, while in areas around pores stress arises that is close to the yield stress of the polymer. This leads to a large plastic deformation and to the growth of pores. Experimental investigation of the loading of polyethylene terephthalate nuclear membranes by excessive gas pressure has confirmed this assumption. Control of changes in the porous structure of membranes was carried out both according to the gas-dynamic pore radius and by the conventional Knudsen equation. It was found that an excess of pressure over some limiting value causes irreversible growth of the pores. The stabilization time of the porous structure (at room temperature) during loading was ca. 10 min. Investigations of changes in porous structure of nuclear membranes under load have been carried out over a wide range of pore size. The growth ratio of pores reached several hundred percent depending on the initial pore sizes and free surface of the membrane.

Author keywords:

MEMBRANE PREPARATION AND STRUCTURE; MICROPOROUS AND POROUS MEMBRANES; TRACKETCHED MEMBRANES; MEMBRANE DEFORMATION; POLY(ETHYLENE TEREPHTHALATE) MEMBRANE GLASSY POLYETHYLENE TEREPHTHALATE; ADSORPTION-ACTIVE MEDIUM

DOI:

10.1016/S0376-7388(00)80584-0

Web of Science ID:

ISI:A1991EY29100007

Соавторы в МНС:

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Другие поля

Поле	Значение
Month	JAN 15
Note	INTERNATIONAL SYMP ON MEMBRANES FOR GAS AND VAPOR SEPARATIONS, SUZDAL, USSR, FEB 27-MAR 05, 1989
Organization	EUROPEAN SOC MEMBRANE SCI \& TECHNOL
Publisher	ELSEVIER SCIENCE BV
Address	PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
Language	English
Keywords-Plus	GLASSY POLYETHYLENE TEREPHTHALATE; ADSORPTION-ACTIVE MEDIUM
Research-Areas	Engineering; Polymer Science
Web-of-Science-Categories	Engineering, Chemical; Polymer Science
Number-of-Cited-References	14
Usage-Count-Last-180-days	4
Usage-Count-Since-2013	4
Journal-ISO	J. Membr. Sci.
Doc-Delivery-Number	EY291