Aqueous solutions of native and hydrophobically modified polysaccharides: temperature effect.
Identifieur interne : 000164 ( PubMed/Checkpoint ); précédent : 000163; suivant : 000165Aqueous solutions of native and hydrophobically modified polysaccharides: temperature effect.
Auteurs : A. Durand [France] ; Édith Dellacherie [France]Source :
- Biomacromolecules [ 1525-7797 ] ; 2006.
Descripteurs français
- KwdFr :
- MESH :
English descriptors
- KwdEn :
- MESH :
- chemical , chemistry : Dextrans, Polymers, Polysaccharides, Surface-Active Agents, Water.
- methods : Biotechnology.
- Hydrophobic and Hydrophilic Interactions, Models, Chemical, Solvents, Temperature, Viscosity.
Abstract
Amphiphilic polysaccharides, obtained by the attachment of various hydrocarbon groups onto dextran, are studied in aqueous solutions. The viscosity of their aqueous solutions is examined as a function of concentration and temperature in the range 25-65 degrees C. Varying polymer concentration, viscosity follows a polynomial development of Huggins equation in which the coefficients can be calculated from the Huggins constant determined in the dilute domain (Matsuoka-Cowman equation). For all polymers, the solution viscosity follows an Arrhenius-like variation with temperature. The activation energy of the aqueous solutions is determined as a function of polymer concentration and structural characteristics (nature and amount of grafted hydrocarbon groups). The variation of activation energy with polymer concentration is shown to be consistent with predictions based on the Matsuoka-Cowman equation combined with the equation of Andrade. This conclusion is extended to other polysaccharides using data from the literature.
DOI: 10.1021/bm0509063
PubMed: 16529437
Affiliations:
- France
- Grand Est, Lorraine (région)
- Nancy
- Centre national de la recherche scientifique, Laboratoire réactions et génie des procédés, Université de Lorraine
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pubmed:16529437Le document en format XML
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Durand</name><affiliation wicri:level="3"><nlm:affiliation>Laboratoire de Chimie Physique Macromoléculaire, UMR CNRS-INPL 7568, Groupe ENSIC, BP 20451, 54001 Nancy Cedex, France. alain.durand@ensic.inpl-nancy.fr</nlm:affiliation><country xml:lang="fr">France</country><wicri:regionArea>Laboratoire de Chimie Physique Macromoléculaire, UMR CNRS-INPL 7568, Groupe ENSIC, BP 20451, 54001 Nancy Cedex</wicri:regionArea><placeName><region type="region" nuts="2">Grand Est</region><region type="old region" nuts="2">Lorraine (région)</region><settlement type="city">Nancy</settlement></placeName></affiliation></author><author><name sortKey="Dellacherie, E" sort="Dellacherie, E" uniqKey="Dellacherie E" first="E" last="Dellacherie">Édith Dellacherie</name><affiliation><country>France</country><placeName><settlement type="city">Nancy</settlement><region type="region" nuts="2">Grand Est</region><region type="region" nuts="2">Lorraine (région)</region></placeName><orgName type="laboratoire" n="5">Laboratoire réactions et génie des procédés</orgName><orgName type="university">Université de Lorraine</orgName><orgName type="institution">Centre national de la recherche scientifique</orgName></affiliation></author></titleStmt><publicationStmt><idno type="wicri:source">PubMed</idno><date when="2006">2006</date><idno type="doi">10.1021/bm0509063</idno><idno type="RBID">pubmed:16529437</idno><idno type="pmid">16529437</idno><idno type="wicri:Area/PubMed/Corpus">000166</idno><idno type="wicri:explorRef" wicri:stream="PubMed" wicri:step="Corpus" wicri:corpus="PubMed">000166</idno><idno type="wicri:Area/PubMed/Curation">000166</idno><idno type="wicri:explorRef" wicri:stream="PubMed" wicri:step="Curation">000166</idno><idno type="wicri:Area/PubMed/Checkpoint">000166</idno><idno type="wicri:explorRef" wicri:stream="Checkpoint" wicri:step="PubMed">000166</idno></publicationStmt><sourceDesc><biblStruct><analytic><title xml:lang="en">Aqueous solutions of native and hydrophobically modified polysaccharides: temperature effect.</title><author><name sortKey="Durand, A" sort="Durand, A" uniqKey="Durand A" first="A" last="Durand">A. 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The viscosity of their aqueous solutions is examined as a function of concentration and temperature in the range 25-65 degrees C. Varying polymer concentration, viscosity follows a polynomial development of Huggins equation in which the coefficients can be calculated from the Huggins constant determined in the dilute domain (Matsuoka-Cowman equation). For all polymers, the solution viscosity follows an Arrhenius-like variation with temperature. The activation energy of the aqueous solutions is determined as a function of polymer concentration and structural characteristics (nature and amount of grafted hydrocarbon groups). The variation of activation energy with polymer concentration is shown to be consistent with predictions based on the Matsuoka-Cowman equation combined with the equation of Andrade. This conclusion is extended to other polysaccharides using data from the literature.</div></front></TEI><pubmed><MedlineCitation Owner="NLM" Status="MEDLINE"><PMID Version="1">16529437</PMID><DateCreated><Year>2006</Year><Month>03</Month><Day>13</Day></DateCreated><DateCompleted><Year>2006</Year><Month>07</Month><Day>21</Day></DateCompleted><DateRevised><Year>2013</Year><Month>11</Month><Day>21</Day></DateRevised><Article PubModel="Print"><Journal><ISSN IssnType="Print">1525-7797</ISSN><JournalIssue CitedMedium="Print"><Volume>7</Volume><Issue>3</Issue><PubDate><Year>2006</Year><Month>Mar</Month></PubDate></JournalIssue><Title>Biomacromolecules</Title><ISOAbbreviation>Biomacromolecules</ISOAbbreviation></Journal><ArticleTitle>Aqueous solutions of native and hydrophobically modified polysaccharides: temperature effect.</ArticleTitle><Pagination><MedlinePgn>958-64</MedlinePgn></Pagination><Abstract><AbstractText>Amphiphilic polysaccharides, obtained by the attachment of various hydrocarbon groups onto dextran, are studied in aqueous solutions. The viscosity of their aqueous solutions is examined as a function of concentration and temperature in the range 25-65 degrees C. Varying polymer concentration, viscosity follows a polynomial development of Huggins equation in which the coefficients can be calculated from the Huggins constant determined in the dilute domain (Matsuoka-Cowman equation). For all polymers, the solution viscosity follows an Arrhenius-like variation with temperature. The activation energy of the aqueous solutions is determined as a function of polymer concentration and structural characteristics (nature and amount of grafted hydrocarbon groups). The variation of activation energy with polymer concentration is shown to be consistent with predictions based on the Matsuoka-Cowman equation combined with the equation of Andrade. 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Durand</name></region><name sortKey="Dellacherie, E" sort="Dellacherie, E" uniqKey="Dellacherie E" first="E" last="Dellacherie">Édith Dellacherie</name></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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