Characterization of membrane skin defects by gas permeation method

This paper deals with a gas permeation method designed for the characterization of the skin layer of asymmetric or composite membranes. The suggested method enables the determination of the average skin thickness, the number of defects and their mean size. It was applied for the evaluation of the ef...

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Bibliographic Details
Published inJournal of membrane science Vol. 73; no. 1; pp. 47 - 53
Main Authors Uchytil, P., Nguyen, X.Q., Brož, Z.
Format Journal Article
LanguageEnglish
Published Amsterdam Elsevier B.V 02.10.1992
Elsevier
Subjects
asymmetric membrane
Chemistry
Colloidal state and disperse state
Exact sciences and technology
gas permeation
General and physical chemistry
Membranes
polymeric membranes
polyvinyltrimethylsilane
skin defects
polyvinyltrimethylsilane
polymeric membranes
skin defects
asymmetric membrane
gas permeation
Gas permeability
Surface defect
Asymmetric membrane
Theoretical study
Membrane
Polysilane
Models
Experimental study
Surface structure
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Summary:This paper deals with a gas permeation method designed for the characterization of the skin layer of asymmetric or composite membranes. The suggested method enables the determination of the average skin thickness, the number of defects and their mean size. It was applied for the evaluation of the efficiency of a new process for skin defects removal. Measurements were performed using flat asymmetric polyvinyltrimethylsilane membranes prior to and after their in situ treatment.
ISSN:0376-7388
1873-3123
DOI:10.1016/0376-7388(92)80185-M