Abstract In the present study, the interaction behaviour of 12–2–12 Gemini surfactant in aqueous saccharide solutions (lactose and maltodextrin solutions) is investigated using density, sound velocity and viscosity measurements. The density and sound velocity data were used to determine the volume and compressibility parameters. The effects of temperature and concentration/strength of the solutions on the interaction behaviour were analysed by conductivity studies over a wide temperature (293.15–313.15) K and concentration range of the saccharides as well as of the surfactant. It was found that predominantly hydrophobic interactions together with ionic/hydrophilic interactions between 12–2–12 Gemini surfactant and the saccharides maltodextrin and lactose play a role. In addition, the structural changes in the 12–2–12 Gemini solutions induced by lactose and maltodextrin were investigated by viscosity measurements. The results confirm the observations from the volume and compressibility studies. The study of the different hydrophobic/hydrophilic interactions in the Gemini surfactant-sacharide-water mixtures are very helpful to understand the structural behaviour of Gemini surfactants in the view of their biological significance.

中文翻译：

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阳离子 12-2-12 Gemini 表面活性剂与水溶液中糖类相互作用的研究：体积、可压缩性和粘度分析

摘要 在本研究中，使用密度、声速和粘度测量研究了 12-2-12 Gemini 表面活性剂在糖类水溶液（乳糖和麦芽糊精溶液）中的相互作用行为。密度和声速数据用于确定体积和可压缩性参数。通过在宽温度 (293.15–313.15) K 和糖类以及表面活性剂的浓度范围内的电导率研究，分析了温度和溶液浓度/强度对相互作用行为的影响。发现主要疏水相互作用以及 12-2-12 Gemini 表面活性剂与糖类麦芽糖糊精和乳糖之间的离子/亲水相互作用发挥作用。此外，通过粘度测量研究了由乳糖和麦芽糊精引起的 12-2-12 Gemini 溶液的结构变化。结果证实了体积和可压缩性研究的观察结果。Gemini 表面活性剂-糖-水混合物中不同疏水/亲水相互作用的研究对于从生物学意义的角度理解 Gemini 表面活性剂的结构行为非常有帮助。