水溶液
化学
两亲性
粘度计
烷基
荧光光谱法
钠
紫外可见光谱
聚电解质
化学结构
光谱学
聚合物
荧光
有机化学
高分子化学
色谱法
共聚物
粘度
材料科学
物理
复合材料
量子力学
作者
Sophie Pelletier,P. Hubert,Françoise Lapicque,E. Payan,Édith Dellacherie
标识
DOI:10.1016/s0144-8617(00)00188-0
摘要
This paper reports on the synthesis and the physico-chemical characterisation of various amphiphilic derivatives of two natural polysaccharides, sodium alginate and sodium hyaluronate, in which a rather small proportion of the carboxylic groups (≤10% mol) was esterified by long alkyl chains (C12H25 or C18H37). The derivatives thus prepared were characterised by gas chromatography, 1H and 13C n.m.r. spectroscopy and size exclusion chromatography coupled to a multi-angle laser light scattering detection. The tendency of these water-soluble compounds to hydrophobic association in aqueous solutions was evidenced firstly in dilute regime using capillary viscometry as well as fluorescence spectroscopy in the presence of a molecular probe, 1,1-dicyano-(4′-N,N-dimethylaminophenyl)-1,3-butadiene.
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