Solvent-free synthesis and properties of carboxymethyl starch fatty acid ester derivatives
Solvent-free synthesis and properties of carboxymethyl starch fatty acid ester derivatives
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DOI：
10.2478/s11696-008-0088-x
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发表时间：
2009-02-01
期刊：
影响因子：
2.2
通讯作者：
Ebringerova, Anna
中科院分区：
文献类型：
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作者：
Mazikova, Viera;Srokova, Iva;Ebringerova, Anna
水溶性、部分疏水的多糖由于其作为聚合物表面活性剂的潜力而变得有吸引力。以羧甲基淀粉(CMS)为原料，在无溶剂条件下，采用两种非常规方法，即(A)与混合酸酐反应和(B)与菜籽油脂肪酸络合物(MERO)的月桂酸甲酯(Mela)和甲酯反应，合成了水溶性高分子表面活性剂。对所合成的CMS衍生物进行了结构、表面活性和表面活性表征。与方法A相比，使用方法B的酯化反应是成功的，方法A的酯化程度非常低。虽然这些衍生物适度降低了表面张力，但它们表现出了显著的乳化性能。性能测试表明，该清洗剂具有良好的洗涤能力和抗再沉积性能。结果表明，两种酰化试剂均可通过非传统的酯化方法B制备出合适的聚合物表面活性剂。这些制剂可能会取代昂贵的、侵入性的工业应用的传统方法。(C)2008年斯洛伐克科学院化学研究所
Water-soluble, partially hydrophobized polysaccharides have become attractive due to their potential to act as polymeric surfactants. From carboxymethyl starch (CMS), water-soluble polymeric surfactants were prepared by esterification using two unconvential methods based on (A) a reaction with mixed anhydrides and (B) with methyl laureate (MELA) and methyl esters of the fatty acid complex of rape seed oil (MERO) under 'solvent-free' conditions. The obtained CMS derivatives were characterized by structural, surface-active and surfactant performance properties. Esterification using method B was successful in contrast to method A which yielded derivatives with a very low extent of esterification. Although the derivatives reduced the surface tension moderately, they exhibited remarkable emulsifying properties. The performance tests indicated good washing power and antiredeposition efficiency. The results suggest that suitable polymeric surfactants can be prepared by the unconventional esterification method B using both acylation agents. The preparations might substitute the expensive and invasive industrially applied conventional methods. (C) 2008 Institute of Chemistry, Slovak Academy of Sciences