Hydrophobically Modified Xanthan: An Amphiphilic but Not Associative Polymer
Hydrophobic octyl moieties have been grafted in various densities onto the carboxylic acid functions of xanthan under its ordered conformation. The outcoming amphiphilic and associative properties were studied by fluorescence spectroscopy and rheology. Results showed that the conformation of xanthan...
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| Veröffentlicht in: | Biomacromolecules 2014-04, Vol.15 (4), p.1160-1170 |
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| creator | Roy, Audrey Comesse, Sébastien Grisel, Michel Hucher, Nicolas Souguir, Zied Renou, Frédéric |
| description | Hydrophobic octyl moieties have been grafted in various densities onto the carboxylic acid functions of xanthan under its ordered conformation. The outcoming amphiphilic and associative properties were studied by fluorescence spectroscopy and rheology. Results showed that the conformation of xanthan is not affected by the chemical modification and remains the same as the native one. Additionally, xanthan derivatives do not show any viscoelastic enhancement; nevertheless, their dynamics is strongly slowed down: the higher the grafting density, the slower the relaxation. We proved that hydrophobically modified xanthan, even being amphiphilic, does not exhibit any additional associating properties compared to the unmodified xanthan. The high stiffness of xanthan helices does not allow the derivatives to adopt the organization usually observed for flexible amphiphilic polymers. On the basis of these observations, a model depicting such a singular behavior is proposed. |
| doi_str_mv | 10.1021/bm4017034 |
| format | Article |
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The outcoming amphiphilic and associative properties were studied by fluorescence spectroscopy and rheology. Results showed that the conformation of xanthan is not affected by the chemical modification and remains the same as the native one. Additionally, xanthan derivatives do not show any viscoelastic enhancement; nevertheless, their dynamics is strongly slowed down: the higher the grafting density, the slower the relaxation. We proved that hydrophobically modified xanthan, even being amphiphilic, does not exhibit any additional associating properties compared to the unmodified xanthan. The high stiffness of xanthan helices does not allow the derivatives to adopt the organization usually observed for flexible amphiphilic polymers. On the basis of these observations, a model depicting such a singular behavior is proposed.</description><identifier>ISSN: 1525-7797</identifier><identifier>EISSN: 1526-4602</identifier><identifier>DOI: 10.1021/bm4017034</identifier><identifier>PMID: 24547905</identifier><language>eng</language><publisher>Washington, DC: American Chemical Society</publisher><subject>Amines - chemistry ; Applied sciences ; Chemical Sciences ; Condensed Matter ; Exact sciences and technology ; Hydrophobic and Hydrophilic Interactions ; Magnetic Resonance Spectroscopy ; Materials Science ; Natural polymers ; Physicochemistry of polymers ; Physics ; Polymers ; Polysaccharides, Bacterial - chemical synthesis ; Polysaccharides, Bacterial - chemistry ; Rheology ; Soft Condensed Matter ; Spectrometry, Fluorescence ; Starch and polysaccharides ; Temperature ; Viscosity</subject><ispartof>Biomacromolecules, 2014-04, Vol.15 (4), p.1160-1170</ispartof><rights>Copyright © 2014 American Chemical Society</rights><rights>2015 INIST-CNRS</rights><rights>Distributed under a Creative Commons Attribution 4.0 International License</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-a412t-c65876e22e0ad144028911d6da35f2d48964ddeffa4cb7abd242f9eaec4b69cc3</citedby><cites>FETCH-LOGICAL-a412t-c65876e22e0ad144028911d6da35f2d48964ddeffa4cb7abd242f9eaec4b69cc3</cites><orcidid>0000-0001-6184-8660 ; 0000-0003-0480-8747 ; 0000-0002-0794-8115 ; 0000-0002-2267-989X</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://pubs.acs.org/doi/pdf/10.1021/bm4017034$$EPDF$$P50$$Gacs$$H</linktopdf><linktohtml>$$Uhttps://pubs.acs.org/doi/10.1021/bm4017034$$EHTML$$P50$$Gacs$$H</linktohtml><link.rule.ids>230,314,780,784,885,2765,27076,27924,27925,56738,56788</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=28451896$$DView record in Pascal Francis$$Hfree_for_read</backlink><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/24547905$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink><backlink>$$Uhttps://hal.science/hal-02163442$$DView record in HAL$$Hfree_for_read</backlink></links><search><creatorcontrib>Roy, Audrey</creatorcontrib><creatorcontrib>Comesse, Sébastien</creatorcontrib><creatorcontrib>Grisel, Michel</creatorcontrib><creatorcontrib>Hucher, Nicolas</creatorcontrib><creatorcontrib>Souguir, Zied</creatorcontrib><creatorcontrib>Renou, Frédéric</creatorcontrib><title>Hydrophobically Modified Xanthan: An Amphiphilic but Not Associative Polymer</title><title>Biomacromolecules</title><addtitle>Biomacromolecules</addtitle><description>Hydrophobic octyl moieties have been grafted in various densities onto the carboxylic acid functions of xanthan under its ordered conformation. The outcoming amphiphilic and associative properties were studied by fluorescence spectroscopy and rheology. Results showed that the conformation of xanthan is not affected by the chemical modification and remains the same as the native one. Additionally, xanthan derivatives do not show any viscoelastic enhancement; nevertheless, their dynamics is strongly slowed down: the higher the grafting density, the slower the relaxation. We proved that hydrophobically modified xanthan, even being amphiphilic, does not exhibit any additional associating properties compared to the unmodified xanthan. The high stiffness of xanthan helices does not allow the derivatives to adopt the organization usually observed for flexible amphiphilic polymers. On the basis of these observations, a model depicting such a singular behavior is proposed.</description><subject>Amines - chemistry</subject><subject>Applied sciences</subject><subject>Chemical Sciences</subject><subject>Condensed Matter</subject><subject>Exact sciences and technology</subject><subject>Hydrophobic and Hydrophilic Interactions</subject><subject>Magnetic Resonance Spectroscopy</subject><subject>Materials Science</subject><subject>Natural polymers</subject><subject>Physicochemistry of polymers</subject><subject>Physics</subject><subject>Polymers</subject><subject>Polysaccharides, Bacterial - chemical synthesis</subject><subject>Polysaccharides, Bacterial - chemistry</subject><subject>Rheology</subject><subject>Soft Condensed Matter</subject><subject>Spectrometry, Fluorescence</subject><subject>Starch and polysaccharides</subject><subject>Temperature</subject><subject>Viscosity</subject><issn>1525-7797</issn><issn>1526-4602</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2014</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><recordid>eNqNkU1r3DAQhkVIyVdzyB8IvgSSg1tJHtlWbiYk2cL249BCbmIsyayCbW0kO7D_vkqz3b30UBiYYXh4Z3hfQi4Y_cQoZ5_bASiraAEH5IQJXuZQUn74ZxZ5VcnqmJzG-EwplQWII3LMQUAlqTghy8XGBL9e-dZp7PtN9tUb1zlrsiccpxWOt1kzZs2wXrlUvdNZO0_ZNz9lTYxeO5zcq81--H4z2PCRfOiwj_Z828_Ir4f7n3eLfPn98ctds8wRGJ9yXYq6Ki3nlqJhAJTXkjFTGixExw3UsgRjbNch6LbC1nDgnbRoNbSl1Lo4Izfvuivs1Tq4AcNGeXRq0SzV2y6ZUhYA_JUl9vqdXQf_Mts4qcFFbfseR-vnqJgooBYURP0faFKVUtJq_4EOPsZgu90bjKq3TNQuk8RebmXndrBmR_4NIQFXWwBjCqELOGoX91wNgiVP9hzqqJ79HMZk8j8O_gamrp2P</recordid><startdate>20140414</startdate><enddate>20140414</enddate><creator>Roy, Audrey</creator><creator>Comesse, Sébastien</creator><creator>Grisel, Michel</creator><creator>Hucher, Nicolas</creator><creator>Souguir, Zied</creator><creator>Renou, Frédéric</creator><general>American Chemical Society</general><scope>IQODW</scope><scope>CGR</scope><scope>CUY</scope><scope>CVF</scope><scope>ECM</scope><scope>EIF</scope><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7X8</scope><scope>7QO</scope><scope>8FD</scope><scope>FR3</scope><scope>P64</scope><scope>1XC</scope><orcidid>https://orcid.org/0000-0001-6184-8660</orcidid><orcidid>https://orcid.org/0000-0003-0480-8747</orcidid><orcidid>https://orcid.org/0000-0002-0794-8115</orcidid><orcidid>https://orcid.org/0000-0002-2267-989X</orcidid></search><sort><creationdate>20140414</creationdate><title>Hydrophobically Modified Xanthan: An Amphiphilic but Not Associative Polymer</title><author>Roy, Audrey ; Comesse, Sébastien ; Grisel, Michel ; Hucher, Nicolas ; Souguir, Zied ; Renou, Frédéric</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-a412t-c65876e22e0ad144028911d6da35f2d48964ddeffa4cb7abd242f9eaec4b69cc3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2014</creationdate><topic>Amines - chemistry</topic><topic>Applied sciences</topic><topic>Chemical Sciences</topic><topic>Condensed Matter</topic><topic>Exact sciences and technology</topic><topic>Hydrophobic and Hydrophilic Interactions</topic><topic>Magnetic Resonance Spectroscopy</topic><topic>Materials Science</topic><topic>Natural polymers</topic><topic>Physicochemistry of polymers</topic><topic>Physics</topic><topic>Polymers</topic><topic>Polysaccharides, Bacterial - chemical synthesis</topic><topic>Polysaccharides, Bacterial - chemistry</topic><topic>Rheology</topic><topic>Soft Condensed Matter</topic><topic>Spectrometry, Fluorescence</topic><topic>Starch and polysaccharides</topic><topic>Temperature</topic><topic>Viscosity</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Roy, Audrey</creatorcontrib><creatorcontrib>Comesse, Sébastien</creatorcontrib><creatorcontrib>Grisel, Michel</creatorcontrib><creatorcontrib>Hucher, Nicolas</creatorcontrib><creatorcontrib>Souguir, Zied</creatorcontrib><creatorcontrib>Renou, Frédéric</creatorcontrib><collection>Pascal-Francis</collection><collection>Medline</collection><collection>MEDLINE</collection><collection>MEDLINE (Ovid)</collection><collection>MEDLINE</collection><collection>MEDLINE</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>MEDLINE - Academic</collection><collection>Biotechnology Research Abstracts</collection><collection>Technology Research Database</collection><collection>Engineering Research Database</collection><collection>Biotechnology and BioEngineering Abstracts</collection><collection>Hyper Article en Ligne (HAL)</collection><jtitle>Biomacromolecules</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Roy, Audrey</au><au>Comesse, Sébastien</au><au>Grisel, Michel</au><au>Hucher, Nicolas</au><au>Souguir, Zied</au><au>Renou, Frédéric</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Hydrophobically Modified Xanthan: An Amphiphilic but Not Associative Polymer</atitle><jtitle>Biomacromolecules</jtitle><addtitle>Biomacromolecules</addtitle><date>2014-04-14</date><risdate>2014</risdate><volume>15</volume><issue>4</issue><spage>1160</spage><epage>1170</epage><pages>1160-1170</pages><issn>1525-7797</issn><eissn>1526-4602</eissn><abstract>Hydrophobic octyl moieties have been grafted in various densities onto the carboxylic acid functions of xanthan under its ordered conformation. The outcoming amphiphilic and associative properties were studied by fluorescence spectroscopy and rheology. Results showed that the conformation of xanthan is not affected by the chemical modification and remains the same as the native one. Additionally, xanthan derivatives do not show any viscoelastic enhancement; nevertheless, their dynamics is strongly slowed down: the higher the grafting density, the slower the relaxation. We proved that hydrophobically modified xanthan, even being amphiphilic, does not exhibit any additional associating properties compared to the unmodified xanthan. The high stiffness of xanthan helices does not allow the derivatives to adopt the organization usually observed for flexible amphiphilic polymers. On the basis of these observations, a model depicting such a singular behavior is proposed.</abstract><cop>Washington, DC</cop><pub>American Chemical Society</pub><pmid>24547905</pmid><doi>10.1021/bm4017034</doi><tpages>11</tpages><orcidid>https://orcid.org/0000-0001-6184-8660</orcidid><orcidid>https://orcid.org/0000-0003-0480-8747</orcidid><orcidid>https://orcid.org/0000-0002-0794-8115</orcidid><orcidid>https://orcid.org/0000-0002-2267-989X</orcidid></addata></record> |
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| subjects | Amines - chemistry Applied sciences Chemical Sciences Condensed Matter Exact sciences and technology Hydrophobic and Hydrophilic Interactions Magnetic Resonance Spectroscopy Materials Science Natural polymers Physicochemistry of polymers Physics Polymers Polysaccharides, Bacterial - chemical synthesis Polysaccharides, Bacterial - chemistry Rheology Soft Condensed Matter Spectrometry, Fluorescence Starch and polysaccharides Temperature Viscosity |
| title | Hydrophobically Modified Xanthan: An Amphiphilic but Not Associative Polymer |
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