Document Detail

Some peculiarities of water transport through plasticized nonporous membranes.
MedLine Citation:
PMID:  5496907     Owner:  NLM     Status:  MEDLINE    
"Liquid" and "plasticized" solvent membranes are of interest as possible analogues of biological systems. Semipermeable homogeneous films are prepared by plasticizing polyvinylchloride with organic phosphates. Water permeability of such films is relatively high. For a material containing 70% of 1.4-dihydroxyphenyl-bis(dibutylphosphate), the diffusion coefficient of water at room temperature was estimated to be about 1 x 10(-6) cm(2)/sec. Conditioning of a plasticized membrane, under the osmotic gradient of solution of sodium nitrate, leads to profound changes in its morphology and to a drastic increase of its water permeability. The induced changes are reversible to a large extent. Their reversibility in various solutions may be correlated with the respective differences in permselectivity. The structure of expanded membranes and the mechanism of changes taking place under the osmotic gradients are discussed.
S Marian; J Jagur-Grodzinski; O Kedem; D Vofsi
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Biophysical journal     Volume:  10     ISSN:  0006-3495     ISO Abbreviation:  Biophys. J.     Publication Date:  1970 Sep 
Date Detail:
Created Date:  1971-03-12     Completed Date:  1971-03-12     Revised Date:  2009-11-18    
Medline Journal Info:
Nlm Unique ID:  0370626     Medline TA:  Biophys J     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  901-10     Citation Subset:  IM    
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MeSH Terms
Biological Transport
Chemical Phenomena
Membranes, Artificial*
Models, Biological
Osmolar Concentration
Reg. No./Substance:
0/Chlorides; 0/Membranes, Artificial; 0/Nitrates; 0/Phosphates; 0/Plastics; 0/Polyvinyls; 0/Solvents; 7732-18-5/Water

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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