Structures formed by rhamnolipids and polysaccharides in the presence of mono- and bi-valent salts

Rheology modifiers are used to alter the viscosity of products in order to change their flow. In order to make more sustainable products, the traditionally used oil-derived polymers used to alter rheology can be replaced by polysaccharides. For the role of polysaccharides in formulation to be optimised, interactions between them and other formulation ingredients must be analysed, and factors such as natural structural variation must taken into account in such analysis. The aim of this study is to investigate the structures formed between the polysaccharide, xanthan gum, at different acetate/pyruvate ratios and rhamnolipids - a bio-derived, sustainable surfactant - in the presence of sodium and calcium chloride. Elucidating the interactions between these ingredients will allow the optimisation of their use in formulations for home and personal care products.流变改性剂（Rheology modifiers）可通过调控产品黏度以改变其流动行为。为制备更具可持续性的产品，传统用于调节流变性能的石油基聚合物可被多糖类物质取代。若要优化多糖在配方中的应用效果，需分析其与其他配方组分间的相互作用，且此类分析必须将天然结构差异等因素纳入考量。本研究旨在探究在氯化钠与氯化钙存在的条件下，不同乙酸酯/丙酮酸酯比例的多糖——黄原胶（xanthan gum）——与生物基可持续表面活性剂鼠李糖脂（rhamnolipids）之间形成的复合结构。阐明此类组分间的相互作用，将有助于优化其在家用及个人护理产品配方中的应用。