Micellar growth in salt-free aqueous solutions of a Gemini cationic surfactant: Evidence for a multimodal population of aggregates
Identifieur interne : 000613 ( Main/Exploration ); précédent : 000612; suivant : 000614Micellar growth in salt-free aqueous solutions of a Gemini cationic surfactant: Evidence for a multimodal population of aggregates
Auteurs : V. Weber [France] ; T. Narayanan ; E. Mendes ; F. SchosselerSource :
- Langmuir [ 0743-7463 ] ; 2003.
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- Pascal (Inist)
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Abstract
We study salt-free aqueous solutions of a cationic gemini surfactant in the concentration range between the critical micellar concentration and the onset of the semidilute regime by combining SAXS, static and dynamic light-scattering techniques. The results give strong evidence for the coexistence of small, intermediate, and very large micellar sizes in the whole range of concentration. The qualitative evolution of the different micellar populations could be followed as a function of concentration and is found in good qualitative agreement with recent cryo-TEM observations on the same system by Bernheim-Grosswasser et al.
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Mendes</name></author><author><name sortKey="Schosseler, F" sort="Schosseler, F" uniqKey="Schosseler F" first="F." last="Schosseler">F. 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Weber</name><affiliation wicri:level="3"><inist:fA14 i1="01"><s1>Lab. de Dynamique Fluides Complexes UMR 7506 (CNRS-ULP)</s1><s2>67084 Strasbourg Cedex</s2><s3>FRA</s3><sZ>1 aut.</sZ></inist:fA14><country>France</country><placeName><region type="region" nuts="2">Grand Est</region><region type="old region" nuts="2">Alsace (région administrative)</region><settlement type="city">Strasbourg</settlement></placeName></affiliation></author><author><name sortKey="Narayanan, T" sort="Narayanan, T" uniqKey="Narayanan T" first="T." last="Narayanan">T. Narayanan</name></author><author><name sortKey="Mendes, E" sort="Mendes, E" uniqKey="Mendes E" first="E." last="Mendes">E. Mendes</name></author><author><name sortKey="Schosseler, F" sort="Schosseler, F" uniqKey="Schosseler F" first="F." last="Schosseler">F. Schosseler</name></author></analytic><series><title level="j" type="main">Langmuir</title><title level="j" type="abbreviated">Langmuir</title><idno type="ISSN">0743-7463</idno><imprint><date when="2003">2003</date></imprint></series></biblStruct></sourceDesc><seriesStmt><title level="j" type="main">Langmuir</title><title level="j" type="abbreviated">Langmuir</title><idno type="ISSN">0743-7463</idno></seriesStmt></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Critical micelle concentration</term><term>Experiments</term><term>Gemini cationic surfactant</term><term>Growth (materials)</term><term>Light scattering</term><term>Mathematical models</term><term>Micellar growth</term><term>Positive ions</term><term>Small angle x ray spectroscopy</term><term>Solutions</term><term>Surface active agents</term><term>Theory</term><term>Transmission electron microscopy</term><term>X ray spectroscopy</term></keywords><keywords scheme="Pascal" xml:lang="fr"><term>Théorie</term><term>Concentration critique micellaire</term><term>Croissance matériau</term><term>Solution</term><term>Ion positif</term><term>Spectrométrie RX</term><term>Diffusion lumière</term><term>Microscopie électronique transmission</term><term>Modèle mathématique</term><term>Agent surface</term><term>Expérience</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">We study salt-free aqueous solutions of a cationic gemini surfactant in the concentration range between the critical micellar concentration and the onset of the semidilute regime by combining SAXS, static and dynamic light-scattering techniques. The results give strong evidence for the coexistence of small, intermediate, and very large micellar sizes in the whole range of concentration. The qualitative evolution of the different micellar populations could be followed as a function of concentration and is found in good qualitative agreement with recent cryo-TEM observations on the same system by Bernheim-Grosswasser et al.</div></front></TEI><affiliations><list><country><li>France</li></country><region><li>Alsace (région administrative)</li><li>Grand Est</li></region><settlement><li>Strasbourg</li></settlement></list><tree><noCountry><name sortKey="Mendes, E" sort="Mendes, E" uniqKey="Mendes E" first="E." last="Mendes">E. Mendes</name><name sortKey="Narayanan, T" sort="Narayanan, T" uniqKey="Narayanan T" first="T." last="Narayanan">T. Narayanan</name><name sortKey="Schosseler, F" sort="Schosseler, F" uniqKey="Schosseler F" first="F." last="Schosseler">F. Schosseler</name></noCountry><country name="France"><region name="Grand Est"><name sortKey="Weber, V" sort="Weber, V" uniqKey="Weber V" first="V." last="Weber">V. Weber</name></region></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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