sle3s -水体系:线性流变学表征

IF 2.3 3区工程技术 Q2 MECHANICS

Rheologica Acta Pub Date : 2023-06-08 DOI:10.1007/s00397-023-01398-9

Rosalia Ferraro, Sergio Caserta

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引用次数: 0

摘要

表面活性剂-水混合物表现出复杂的流变行为，根据它们的浓度和温度，随着相的变化，粘度和模量等参数会发生几个数量级的变化:这一批评严重影响了不同的工业过程。在我们的工作中，研究了商业阴离子表面活性剂十二烷基醚硫酸钠的水混合物在温度(30-60°C)和表面活性剂浓度(20-72%wt)的技术相关范围内的线性流变行为。偏振光显微镜鉴定出胶束、六边形、立方和片层四种不同结构的相，均表现出剪切减薄行为。在相对较窄的温度范围内，立方相流变参数呈现净跳变，表明相变是由温度引起的。本文首次报道了对这种广泛使用的表面活性剂体系流变行为的系统分析，可以为许多工业应用提供基础支持。图形抽象

本文章由计算机程序翻译，如有差异，请以英文原文为准。

SLE3S-water system: a linear rheological characterisation

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SLE3S-water system: a linear rheological characterisation

Surfactant-water mixtures display a complex rheological behaviour, with changes in parameters such as viscosity and moduli of several orders of magnitude as a consequence of phase changes, depending on their concentration and temperature: this criticism heavily affects different industrial processes. In our work, linear rheological behaviour of aqueous mixtures of a commercial anionic surfactant, sodium lauryl ether sulphate, is investigated in a range of temperature (30–60 °C) and surfactant concentration (20–72%wt) of technological relevance. Four phases with different texture are identified by polarised light microscopy: micellar, hexagonal, cubic and lamellar, all showing a shear-thinning behaviour. Rheological parameters of cubic phase show a net jump in a relatively narrow temperature range, suggesting a temperature-induced phase change. The systematic analysis of the rheological behaviour of this widely used surfactant system, reported here for the first time, can be of fundamental support for many industrial applications.

Graphical Abstract

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来源期刊

Rheologica Acta 物理-力学

CiteScore

4.60

自引率

8.70%

发文量

审稿时长

3 months

期刊介绍： "Rheologica Acta is the official journal of The European Society of Rheology. The aim of the journal is to advance the science of rheology, by publishing high quality peer reviewed articles, invited reviews and peer reviewed short communications. The Scope of Rheologica Acta includes: - Advances in rheometrical and rheo-physical techniques, rheo-optics, microrheology - Rheology of soft matter systems, including polymer melts and solutions, colloidal dispersions, cement, ceramics, glasses, gels, emulsions, surfactant systems, liquid crystals, biomaterials and food. - Rheology of Solids, chemo-rheology - Electro and magnetorheology - Theory of rheology - Non-Newtonian fluid mechanics, complex fluids in microfluidic devices and flow instabilities - Interfacial rheology Rheologica Acta aims to publish papers which represent a substantial advance in the field, mere data reports or incremental work will not be considered. Priority will be given to papers that are methodological in nature and are beneficial to a wide range of material classes. It should also be noted that the list of topics given above is meant to be representative, not exhaustive. The editors welcome feedback on the journal and suggestions for reviews and comments."