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首页> 外文期刊>Polymer: The International Journal for the Science and Technology of Polymers >ADSORPTION-SOLUTION STRUCTURE RELATIONSHIPS OF PET/POET POLYMERIC SURFACTANTS IN AQUEOUS SOLUTIONS
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ADSORPTION-SOLUTION STRUCTURE RELATIONSHIPS OF PET/POET POLYMERIC SURFACTANTS IN AQUEOUS SOLUTIONS

机译：PET / POTE高分子表面活性剂在水溶液中的吸附-溶液结构关系

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Polyethylene terephthalate/polyoxyethylene terephthalate (PET/POET) water-soluble polymers are effective surface modifiers of polyester-containing textiles and exhibit surface activity in aqueous solutions. Adsorption of a PET/POET polymer on fabric was studied using ultraviolet-visible (u.v.-vis) and fluorescence spectroscopy. Aqueous PET/POET solutions exhibit two distinct fluorescent emission bands, 334 nm and 386 nm, and the latter band is assigned to an intramolecular excimer of terephthalate groups. The ratio of the fluorescence intensities of these two bands (I-386/I-334) decreases upon adsorption of the polymer onto fabrics, indicating that one of the solution structures is preferentially adsorbed. Addition of anionic surfactant such as sodium dodecylsulfate (SDS) inhibits the formation of excimers whereas nonionic surfactant does not. Effects of nonionic, anionic surfactants, as well as salt effects (Na+, Ca2+) on the formation of excimers and on the adsorption behaviour were investigated using both u.v. absorption and fluorescent emission bands, cloud point, and surface techniques. Polymer-surfactant interactions were observed predominantly at surfactant concentrations below the critical micelle concentration (cmc). The apparent cme of SDS increased with increasing polymer concentration, and SDS interactions with the polymer can be explained by models previously used to describe interaction between polyethylene oxide and SDS. Copyright (C) 1996 Elsevier Science Ltd. [References: 28]
机译：聚对苯二甲酸乙二酯/聚对苯二甲酸乙二酯（PET / POET）水溶性聚合物是含聚酯纺织品的有效表面改性剂，并在水溶液中表现出表面活性。使用紫外-可见（u-v.-vis）和荧光光谱研究了PET / POET聚合物在织物上的吸附。 PET / POET水溶液显示两个不同的荧光发射带，分别为334 nm和386 nm，后一个带分配给对苯二甲酸酯基团的分子内准分子。当聚合物吸附到织物上时，这两个谱带的荧光强度之比（I-386 / I-334）降低，表明溶液结构之一被优先吸附。阴离子表面活性剂如十二烷基硫酸钠（SDS）的加入会抑制准分子的形成，而非离子表面活性剂则不会。紫外光和紫外光均研究了非离子，阴离子表面活性剂以及盐效应（Na +，Ca2 +）对准分子形成和吸附行为的影响。吸收和荧光发射带，浊点和表面技术。主要在低于临界胶束浓度（cmc）的表面活性剂浓度下观察到聚合物-表面活性剂的相互作用。 SDS的表观cme随着聚合物浓度的增加而增加，并且SDS与聚合物的相互作用可以通过先前用于描述聚环氧乙烷与SDS之间相互作用的模型来解释。版权所有（C）1996 Elsevier Science Ltd. [引用：28]

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