Properties of aqueous solutions of hydrophobically modified polyethylene imines in the absence and presence of sodium dodecylsulfate
[Display omitted] ► Polyethylene imines with pendant alkyl groups show pronounced surface activity. ► Polyelectrolyte hydrophobicity can be tuned by increasing the alkyl chain length. ► Hydrophobic polyethylene imines interact strongly with sodium dodecylsulfate (SDS). ► At high c(SDS), polyethylene...
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| Veröffentlicht in: | Journal of colloid and interface science 2012-03, Vol.370 (1), p.94-101 |
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| container_title | Journal of colloid and interface science |
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| creator | Bellettini, Ismael C. Nandi, Leandro G. Eising, Renato Domingos, Josiel B. Machado, Vanderlei G. Minatti, Edson |
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► Polyethylene imines with pendant alkyl groups show pronounced surface activity. ► Polyelectrolyte hydrophobicity can be tuned by increasing the alkyl chain length. ► Hydrophobic polyethylene imines interact strongly with sodium dodecylsulfate (SDS). ► At high c(SDS), polyethylene imines form aggregated and random-coil polymer chains.
Four modified hyperbranched polyethylene imines (PEIs) were synthesized by means of the alkylation of PEI. SAXS, viscosity, surface tension, and pyrene fluorescence emission were then used as techniques to examine the conformation and aggregation of the modified PEIs in aqueous solution, in the absence and presence of sodium dodecylsulfate (SDS). Analysis of the SAXS data showed that the radius of gyration decreases with an increase in the alkyl chain length of the polymer, while the viscosity data indicated a decrease in the intrinsic viscosity under the same conditions. The nonmodified PEI was not surface active, while the hydrophobically modified samples showed pronounced surface activity and the presence of hydrophobic domains. On addition of SDS, the onset of the formation of polymer–surfactant complexes was determined, indicating a decrease in the critical aggregate concentration with an increase in the alkyl chain length of the polymer backbone. |
| doi_str_mv | 10.1016/j.jcis.2011.12.049 |
| format | Article |
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► Polyethylene imines with pendant alkyl groups show pronounced surface activity. ► Polyelectrolyte hydrophobicity can be tuned by increasing the alkyl chain length. ► Hydrophobic polyethylene imines interact strongly with sodium dodecylsulfate (SDS). ► At high c(SDS), polyethylene imines form aggregated and random-coil polymer chains.
Four modified hyperbranched polyethylene imines (PEIs) were synthesized by means of the alkylation of PEI. SAXS, viscosity, surface tension, and pyrene fluorescence emission were then used as techniques to examine the conformation and aggregation of the modified PEIs in aqueous solution, in the absence and presence of sodium dodecylsulfate (SDS). Analysis of the SAXS data showed that the radius of gyration decreases with an increase in the alkyl chain length of the polymer, while the viscosity data indicated a decrease in the intrinsic viscosity under the same conditions. The nonmodified PEI was not surface active, while the hydrophobically modified samples showed pronounced surface activity and the presence of hydrophobic domains. On addition of SDS, the onset of the formation of polymer–surfactant complexes was determined, indicating a decrease in the critical aggregate concentration with an increase in the alkyl chain length of the polymer backbone.</description><identifier>ISSN: 0021-9797</identifier><identifier>EISSN: 1095-7103</identifier><identifier>DOI: 10.1016/j.jcis.2011.12.049</identifier><identifier>PMID: 22257961</identifier><identifier>CODEN: JCISA5</identifier><language>eng</language><publisher>Amsterdam: Elsevier Inc</publisher><subject>alkylation ; aqueous solutions ; Chains (polymeric) ; Chemistry ; Exact sciences and technology ; fluorescence ; General and physical chemistry ; Hydrophobic effect ; hydrophobicity ; Imines ; Intrinsic viscosity ; Polyelectrolyte ; Polyetherimides ; polyethylene ; Polyethylene imine ; Polyethylenes ; Polymer–surfactant interactions ; Pyrene fluorescence ; SAXS ; Sodium ; sodium dodecyl sulfate ; Surface chemistry ; Surface physical chemistry ; surface tension ; Viscosity</subject><ispartof>Journal of colloid and interface science, 2012-03, Vol.370 (1), p.94-101</ispartof><rights>2011 Elsevier Inc.</rights><rights>2015 INIST-CNRS</rights><rights>Copyright © 2011 Elsevier Inc. All rights reserved.</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c486t-2843a506a2b4d167a64e16c5c42e86a5192281779800f59f98779996d78fbcc33</citedby><cites>FETCH-LOGICAL-c486t-2843a506a2b4d167a64e16c5c42e86a5192281779800f59f98779996d78fbcc33</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://dx.doi.org/10.1016/j.jcis.2011.12.049$$EHTML$$P50$$Gelsevier$$Hfree_for_read</linktohtml><link.rule.ids>314,780,784,3549,27923,27924,45994</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=25697451$$DView record in Pascal Francis$$Hfree_for_read</backlink><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/22257961$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Bellettini, Ismael C.</creatorcontrib><creatorcontrib>Nandi, Leandro G.</creatorcontrib><creatorcontrib>Eising, Renato</creatorcontrib><creatorcontrib>Domingos, Josiel B.</creatorcontrib><creatorcontrib>Machado, Vanderlei G.</creatorcontrib><creatorcontrib>Minatti, Edson</creatorcontrib><title>Properties of aqueous solutions of hydrophobically modified polyethylene imines in the absence and presence of sodium dodecylsulfate</title><title>Journal of colloid and interface science</title><addtitle>J Colloid Interface Sci</addtitle><description>[Display omitted]
► Polyethylene imines with pendant alkyl groups show pronounced surface activity. ► Polyelectrolyte hydrophobicity can be tuned by increasing the alkyl chain length. ► Hydrophobic polyethylene imines interact strongly with sodium dodecylsulfate (SDS). ► At high c(SDS), polyethylene imines form aggregated and random-coil polymer chains.
Four modified hyperbranched polyethylene imines (PEIs) were synthesized by means of the alkylation of PEI. SAXS, viscosity, surface tension, and pyrene fluorescence emission were then used as techniques to examine the conformation and aggregation of the modified PEIs in aqueous solution, in the absence and presence of sodium dodecylsulfate (SDS). Analysis of the SAXS data showed that the radius of gyration decreases with an increase in the alkyl chain length of the polymer, while the viscosity data indicated a decrease in the intrinsic viscosity under the same conditions. The nonmodified PEI was not surface active, while the hydrophobically modified samples showed pronounced surface activity and the presence of hydrophobic domains. On addition of SDS, the onset of the formation of polymer–surfactant complexes was determined, indicating a decrease in the critical aggregate concentration with an increase in the alkyl chain length of the polymer backbone.</description><subject>alkylation</subject><subject>aqueous solutions</subject><subject>Chains (polymeric)</subject><subject>Chemistry</subject><subject>Exact sciences and technology</subject><subject>fluorescence</subject><subject>General and physical chemistry</subject><subject>Hydrophobic effect</subject><subject>hydrophobicity</subject><subject>Imines</subject><subject>Intrinsic viscosity</subject><subject>Polyelectrolyte</subject><subject>Polyetherimides</subject><subject>polyethylene</subject><subject>Polyethylene imine</subject><subject>Polyethylenes</subject><subject>Polymer–surfactant interactions</subject><subject>Pyrene fluorescence</subject><subject>SAXS</subject><subject>Sodium</subject><subject>sodium dodecyl sulfate</subject><subject>Surface chemistry</subject><subject>Surface physical chemistry</subject><subject>surface tension</subject><subject>Viscosity</subject><issn>0021-9797</issn><issn>1095-7103</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2012</creationdate><recordtype>article</recordtype><recordid>eNp9kUFv1DAQhS0EotvCH-AAuSC4bLCd2I4lLqiigFQJJOjZcuwJ61USL3aClDs_nAlZeuxpbOub9zzzCHnBaMkok--O5dGFXHLKWMl4SWv9iOwY1WKvGK0ekx2lnO210uqCXOZ8pAgKoZ-SC865UFqyHfnzLcUTpClALmJX2F8zxDkXOfbzFOL47_GweIQOsQ3O9v1SDNGHLoAvTrFfYDosPYxQhCGMKBLGYjpAYdsMo8M6IpZgu6BWxt55KHz04JY-z31nJ3hGnnS2z_D8XK_I3c3HH9ef97dfP325_nC7d3Ujpz1v6soKKi1va8-ksrIGJp1wNYdGWsE05w1TSjeUdkJ3usGz1tKrpmudq6or8mbTPaWIg-bJDCE76Hs7rlMbzSmvKC4MybcPkujO0E8IgSjfUJdizgk6c0phsGkxjJo1J3M0a05mzckwbjAnbHp51p_bAfx9y_9gEHh9BmzGrXfJjqvGPSekVrVYuVcb19lo7M-EzN13dJKUUqVqvhLvNwJws78DJJNdWOPwIYGbjI_hoZ_-BXhTu8A</recordid><startdate>20120315</startdate><enddate>20120315</enddate><creator>Bellettini, Ismael C.</creator><creator>Nandi, Leandro G.</creator><creator>Eising, Renato</creator><creator>Domingos, Josiel B.</creator><creator>Machado, Vanderlei G.</creator><creator>Minatti, Edson</creator><general>Elsevier Inc</general><general>Elsevier</general><scope>6I.</scope><scope>AAFTH</scope><scope>FBQ</scope><scope>IQODW</scope><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7U5</scope><scope>8FD</scope><scope>L7M</scope><scope>7X8</scope></search><sort><creationdate>20120315</creationdate><title>Properties of aqueous solutions of hydrophobically modified polyethylene imines in the absence and presence of sodium dodecylsulfate</title><author>Bellettini, Ismael C. ; Nandi, Leandro G. ; Eising, Renato ; Domingos, Josiel B. ; Machado, Vanderlei G. ; Minatti, Edson</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c486t-2843a506a2b4d167a64e16c5c42e86a5192281779800f59f98779996d78fbcc33</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2012</creationdate><topic>alkylation</topic><topic>aqueous solutions</topic><topic>Chains (polymeric)</topic><topic>Chemistry</topic><topic>Exact sciences and technology</topic><topic>fluorescence</topic><topic>General and physical chemistry</topic><topic>Hydrophobic effect</topic><topic>hydrophobicity</topic><topic>Imines</topic><topic>Intrinsic viscosity</topic><topic>Polyelectrolyte</topic><topic>Polyetherimides</topic><topic>polyethylene</topic><topic>Polyethylene imine</topic><topic>Polyethylenes</topic><topic>Polymer–surfactant interactions</topic><topic>Pyrene fluorescence</topic><topic>SAXS</topic><topic>Sodium</topic><topic>sodium dodecyl sulfate</topic><topic>Surface chemistry</topic><topic>Surface physical chemistry</topic><topic>surface tension</topic><topic>Viscosity</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Bellettini, Ismael C.</creatorcontrib><creatorcontrib>Nandi, Leandro G.</creatorcontrib><creatorcontrib>Eising, Renato</creatorcontrib><creatorcontrib>Domingos, Josiel B.</creatorcontrib><creatorcontrib>Machado, Vanderlei G.</creatorcontrib><creatorcontrib>Minatti, Edson</creatorcontrib><collection>ScienceDirect Open Access Titles</collection><collection>Elsevier:ScienceDirect:Open Access</collection><collection>AGRIS</collection><collection>Pascal-Francis</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>Solid State and Superconductivity Abstracts</collection><collection>Technology Research Database</collection><collection>Advanced Technologies Database with Aerospace</collection><collection>MEDLINE - Academic</collection><jtitle>Journal of colloid and interface science</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Bellettini, Ismael C.</au><au>Nandi, Leandro G.</au><au>Eising, Renato</au><au>Domingos, Josiel B.</au><au>Machado, Vanderlei G.</au><au>Minatti, Edson</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Properties of aqueous solutions of hydrophobically modified polyethylene imines in the absence and presence of sodium dodecylsulfate</atitle><jtitle>Journal of colloid and interface science</jtitle><addtitle>J Colloid Interface Sci</addtitle><date>2012-03-15</date><risdate>2012</risdate><volume>370</volume><issue>1</issue><spage>94</spage><epage>101</epage><pages>94-101</pages><issn>0021-9797</issn><eissn>1095-7103</eissn><coden>JCISA5</coden><abstract>[Display omitted]
► Polyethylene imines with pendant alkyl groups show pronounced surface activity. ► Polyelectrolyte hydrophobicity can be tuned by increasing the alkyl chain length. ► Hydrophobic polyethylene imines interact strongly with sodium dodecylsulfate (SDS). ► At high c(SDS), polyethylene imines form aggregated and random-coil polymer chains.
Four modified hyperbranched polyethylene imines (PEIs) were synthesized by means of the alkylation of PEI. SAXS, viscosity, surface tension, and pyrene fluorescence emission were then used as techniques to examine the conformation and aggregation of the modified PEIs in aqueous solution, in the absence and presence of sodium dodecylsulfate (SDS). Analysis of the SAXS data showed that the radius of gyration decreases with an increase in the alkyl chain length of the polymer, while the viscosity data indicated a decrease in the intrinsic viscosity under the same conditions. The nonmodified PEI was not surface active, while the hydrophobically modified samples showed pronounced surface activity and the presence of hydrophobic domains. On addition of SDS, the onset of the formation of polymer–surfactant complexes was determined, indicating a decrease in the critical aggregate concentration with an increase in the alkyl chain length of the polymer backbone.</abstract><cop>Amsterdam</cop><pub>Elsevier Inc</pub><pmid>22257961</pmid><doi>10.1016/j.jcis.2011.12.049</doi><tpages>8</tpages><oa>free_for_read</oa></addata></record> |
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| subjects | alkylation aqueous solutions Chains (polymeric) Chemistry Exact sciences and technology fluorescence General and physical chemistry Hydrophobic effect hydrophobicity Imines Intrinsic viscosity Polyelectrolyte Polyetherimides polyethylene Polyethylene imine Polyethylenes Polymer–surfactant interactions Pyrene fluorescence SAXS Sodium sodium dodecyl sulfate Surface chemistry Surface physical chemistry surface tension Viscosity |
| title | Properties of aqueous solutions of hydrophobically modified polyethylene imines in the absence and presence of sodium dodecylsulfate |
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