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THE ADSORPTION OF GELATIN BY COLLODION MEMBRANES

An experimental study has been made of the adsorption of gelatin from solution at 37°C. by collodion membranes. In the case of membranes of high permeability, very high concentrations of gelatin were required to produce maximum adsorption, and the maximum amounts adsorbed were independent of the pH...

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Detalles Bibliográficos
Autor principal: Palmer, Albert H.
Formato: Texto
Lenguaje:English
Publicado: The Rockefeller University Press 1932
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2141183/
https://www.ncbi.nlm.nih.gov/pubmed/19872665
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author Palmer, Albert H.
author_facet Palmer, Albert H.
author_sort Palmer, Albert H.
collection PubMed
description An experimental study has been made of the adsorption of gelatin from solution at 37°C. by collodion membranes. In the case of membranes of high permeability, very high concentrations of gelatin were required to produce maximum adsorption, and the maximum amounts adsorbed were independent of the pH values of the solutions over the range 3.8 to 4.8. With membranes of low permeability, maximum adsorption was reached at lower gelatin concentrations, and the maximum amounts adsorbed varied with the pH, being lower on either side of the isoelectric point, over the range 3.8 to 6.6. The addition of salt in such experiments raised the maximum amount adsorbed to a value equal to that obtained with solutions at the isoelectric point in the absence of salt. These experiments can be explained by, and seem to lend support to, the theory proposed by Loeb and further developed by Kunitz concerning the effects of pH and salt on the size of gelatin particles in solution.
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spelling pubmed-21411832008-04-23 THE ADSORPTION OF GELATIN BY COLLODION MEMBRANES Palmer, Albert H. J Gen Physiol Article An experimental study has been made of the adsorption of gelatin from solution at 37°C. by collodion membranes. In the case of membranes of high permeability, very high concentrations of gelatin were required to produce maximum adsorption, and the maximum amounts adsorbed were independent of the pH values of the solutions over the range 3.8 to 4.8. With membranes of low permeability, maximum adsorption was reached at lower gelatin concentrations, and the maximum amounts adsorbed varied with the pH, being lower on either side of the isoelectric point, over the range 3.8 to 6.6. The addition of salt in such experiments raised the maximum amount adsorbed to a value equal to that obtained with solutions at the isoelectric point in the absence of salt. These experiments can be explained by, and seem to lend support to, the theory proposed by Loeb and further developed by Kunitz concerning the effects of pH and salt on the size of gelatin particles in solution. The Rockefeller University Press 1932-05-20 /pmc/articles/PMC2141183/ /pubmed/19872665 Text en Copyright © Copyright, 1932, by The Rockefeller Institute for Medical Research This article is distributed under the terms of an Attribution–Noncommercial–Share Alike–No Mirror Sites license for the first six months after the publication date (see http://www.rupress.org/terms). After six months it is available under a Creative Commons License (Attribution–Noncommercial–Share Alike 4.0 Unported license, as described at http://creativecommons.org/licenses/by-nc-sa/4.0/).
spellingShingle Article
Palmer, Albert H.
THE ADSORPTION OF GELATIN BY COLLODION MEMBRANES
title THE ADSORPTION OF GELATIN BY COLLODION MEMBRANES
title_full THE ADSORPTION OF GELATIN BY COLLODION MEMBRANES
title_fullStr THE ADSORPTION OF GELATIN BY COLLODION MEMBRANES
title_full_unstemmed THE ADSORPTION OF GELATIN BY COLLODION MEMBRANES
title_short THE ADSORPTION OF GELATIN BY COLLODION MEMBRANES
title_sort adsorption of gelatin by collodion membranes
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2141183/
https://www.ncbi.nlm.nih.gov/pubmed/19872665
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