Study of the complex formation between sodium dodecyl sulfate and hydrophobically modified chitosan

被引：34
|
作者：
Onesippe, Cristel [1 ,2 ]
Lagerge, Serge [2 ]
机构：
[1] Univ Antilles Guyane, UFR SEN, Lab COVACHIMM EA 3592, BP 250, F-97157 Pointe A Pitre, Guadeloupe, France
[2] Univ Montpellier 2, Lab Agregats Mol & Mat Inorgan, CNRS UMR 5072, Federat Lab GERHARDT FR 1878, F-34095 Montpellier 05, France
来源：
CARBOHYDRATE POLYMERS | 2008年 / 74卷 / 03期
关键词：
chitosan; hydrophobically modified polymer; sodium dodecyl sulfate; surfactant selective electrode (SSE); isothermal titration calorimetry (ITC);
D O I：
10.1016/j.carbpol.2008.04.021
中图分类号：
O69 [应用化学];
学科分类号：
081704 ;
摘要：
tries. in this paper, grafted alkylated side chains on the chitosan backbone hydrophobically modify this water-soluble polymer. In this study, cationic HMP is characterized (acetylation degree and Substitution degree) and polymer-surfactant complexes formed with anionic surfactant Sodium Dodecyl Sulfate (SDS) are investigated. Solvent is a pH 4 acetic acid solution T = 25 degrees C. Binding isotherms and surface tension measurements have been made. The structure of the complexes in the bulk phase has been studied by turbidity and zeta potential measurements. Isothermal titration calorimetry (ITC) allowed some conclusions to be drawn concerning the extent of the hydrophobic interactions. It is concluded from the determination of optimal ionic ratio shows that the alkylated chitosan/SDS system could be used as wall material for capsules using the coacervation process. (C) 2008 Elsevier Ltd. All rights reserved.
引用
收藏
页码：648 / 658
页数：11
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