Synthesis of water-soluble and water-insoluble amphiphilic derivatives of dextran in organic medium

被引：12

作者：

Covis, Rudy ^{[1
,2
]}

Ladaviere, Catherine ^{[3
,4
]}

Desbrieres, Jacques ^{[5
]}

Marie, Emmanuelle ^{[1
,2
]}

Durand, Alain ^{[1
,2
]}

机构：

[1] CNRS, LCPM, FRE3564, F-54001 Nancy, France

[2] Univ Lorraine, LCPM, FRE3564, F-54001 Nancy, France

[3] Univ Lyon, F-69631 Lyon, France

[4] Univ Lyon 1, Ingn Mat Polymeres CNRS, UMR 5223, F-69622 Villeurbanne, France

[5] Univ Pau & Pays de lAdour, IPREM EPCP UMR 5254, F-64053 Pau, France

来源：

CARBOHYDRATE POLYMERS | 2013年 / 95卷 / 01期

关键词：

Dextran; Amphiphilic polysaccharide; Epoxide; Viscometry; SOLUTION BEHAVIOR; SYSTEMS;

D O I：

10.1016/j.carbpol.2013.03.010

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

Hydrophobically modified dextrans were prepared by reacting native polysaccharide with 1,2-epoxydodecane in dimethylsulfoxide. Epoxide oligomerization was shown to occur as a secondary reaction when hydroxide ions were used as base catalysts. By adjusting the amount of epoxide in the feed, dextran derivatives with degrees of substitution (DS) between 0% and 164% were obtained. Polymers with DS above 100% were readily soluble in organic solvents like tetrahydrofuran, dioxane and water-saturated chloroform and dichloromethane. Their solution properties in organic solvent were characterized by capillary viscometry. Water-soluble derivatives were compared to other amphiphilic dextrans obtained using a heterogeneous modification in aqueous medium. The effect of modification conditions on substitution pattern was evidenced. (c) 2013 Elsevier Ltd. All rights reserved.

引用

页码：360 / 365

页数：6

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