Journal of Thermal Analysis and Calorimetry
Volume/Issue:
Volume 66: Issue 1
Polymer-surfactant Interactions
Authors:
A. Capalbi Universitŕ di Roma ‘La Sapienza’ Dipartimento di Chimica P. le A. Moro 5 00185 Roma Italy P. le A. Moro 5 00185 Roma Italy

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C. La Mesa Universitŕ di Roma ‘La Sapienza’ Dipartimento di Chimica P. le A. Moro 5 00185 Roma Italy P. le A. Moro 5 00185 Roma Italy

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Pages:
233–241
Online Publication Date:
03 Nov 2004
Publication Date:
01 Oct 2001
Article Category:
Research Article
DOI:
https://doi.org/10.1023/a:1012456202997
Keywords:
conductivity; interactions; phase diagrams; polymers; surface tension; surfactants
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Abstract  

Aqueous solutions containing poly(vinyl-pyrrolidone) and sodium caprylate, or poly(vinyl-pyrrolidone) and tetraethylammonium perfluorooctanesulfonate,respectively, have been investigated by volumetric, ionic conductivity and surface tension methods. The presence of an interaction region has been determined from conductivity and surface tension. The width of such a region depends on the amount of polymer in the mixture,temperature, surfactant content and added electrolyte (NaCl). The observed behaviour was explained in terms of the combined effects played by the alkyl-chain hydophobicity, polar head group(s) and counter-ions. An approximate solution to a mass action model for the binding of surfactants onto polymers has been introduced. It allows determining the width of the interaction region as a function of polymer mass percent in the mixture.

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Cover Journal of Thermal Analysis and Calorimetry
Journal of Thermal Analysis and Calorimetry
Print ISSN:
1388-6150
Online ISSN:
1572-8943

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Journal of Thermal Analysis and Calorimetry
Language English
Size A4
Year of
Foundation		 1969
Volumes
per Year		 1
Issues
per Year		 24
Founder Akadémiai Kiadó
Founder's
Address		 H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
Publisher Akadémiai Kiadó
Springer Nature Switzerland AG
Publisher's
Address		 H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
CH-6330 Cham, Switzerland Gewerbestrasse 11.
Responsible
Publisher		 Chief Executive Officer, Akadémiai Kiadó
ISSN 1388-6150 (Print)
ISSN 1588-2926 (Online)

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