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首页> 外文期刊>Carbohydrate Polymers: Scientific and Technological Aspects of Industrially Important Polysaccharides >Rheological study of interactions between non-ionic surfactants and polysaccharide thickeners used in textile printing
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Rheological study of interactions between non-ionic surfactants and polysaccharide thickeners used in textile printing

机译:纺织品印花中非离子表面活性剂与多糖增稠剂相互作用的流变学研究

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摘要

The influence of four non-ionic surfactants(isododecyl and cetyl polyoxyethylene ethers)on aqueous polysaccharide solutions(sodium alginate,guar gum,and sodium carboxymethyl guar),applicable for textile printing pastes,were studied via rheological measurements.Rheology of polysaccharide-surfactant solutions in aqueous matrices is primarily governed by polymer content,which imparts marked shear-thinning and viscoelastic character to the system.Such properties are modulated in moderate but sensible way by changes in surfactant concentration or type.Above 3% surfactants addition to non-substituted guar gum solutions results in a significant impact leading to phase separation and a particular strongly associated phase is formed due to hydrogen bonds between ethylene oxy units from the surfactant and primary hydroxyl groups in guar.A satisfactory fitting of viscosity data is obtained with both the Cross equation and the Roberts-Barnes-Carew model.The experimental results of mechanical spectra can be described quite satisfactory with both the Friedrich-Braun and the generalized Maxwell models.
机译:通过流变测量研究了四种非离子表面活性剂(异十二烷基和鲸蜡基聚氧乙烯醚)对适用于纺织品印花浆料的多糖水溶液(海藻酸钠,瓜尔豆胶和羧甲基瓜尔胶钠)的影响。多糖表面活性剂溶液的流变性水性基体中的聚合物主要受聚合物含量的控制,这会给体系带来显着的剪切稀化和粘弹性特征。通过改变表面活性剂的浓度或类型,这些性能会以适度但明智的方式得到调节.3%以上的表面活性剂以及非取代的瓜尔胶胶溶液会产生重大影响,导致相分离,并且由于瓜尔胶中来自表面活性剂的乙烯氧基单元与伯羟基之间形成氢键,形成了特别牢固的缔合相。和Roberts-Barnes-Carew模型。机械点的实验结果用Friedrich-Braun模型和广义Maxwell模型都可以很好地描述ra。

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