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Rheological Properties of Alginatea??Essential Oil Nanodispersions

机译：海藻酸钠精油纳米分散体的流变特性

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Due to its favorable structural properties and biocompatibility, alginate is recognized as a suitable versatile biopolymer for use in a broad range of applications ranging from drug delivery, wound healing, tissue engineering, and food formulations such as nanodispersions. Rheological analysis plays a crucial role in the design of suitable nanoemulsion based coatings. Different essential oil and alginate nanodispersion compositions stabilized by Tween 80 were analyzed for rheological and conductometric properties. The results confirmed that the nanoformulations shared a pseudoplastic non-Newtonian behavior that was more evident with higher alginate concentrations (2%). Nanodispersions made of alginate and essential oil exhibited a slight thixotropic behavior, demonstrating the aptitude to instantaneously recover from the applied stress or strain. Oscillatory frequency sweep tests showed a similar fluid-like behavior for 1% and 2% alginate nanodispersions. Finally, it was demonstrated that advantages coming with the use of the essential oil are added to the positive aspects of alginate with no dramatic modification on the flow behavior.
机译：由于藻酸盐具有良好的结构性能和生物相容性，因此被认为是一种适合的通用生物聚合物，可用于从药物输送，伤口愈合，组织工程和食品制剂（例如纳米分散体）等广泛的应用中。流变学分析在设计合适的基于纳米乳液的涂料中起着至关重要的作用。分析了用Tween 80稳定的不同精油和藻酸盐纳米分散体组合物的流变和电导特性。结果证实，纳米制剂具有假塑性非牛顿行为，这在藻酸盐浓度较高（2％）时更为明显。由藻酸盐和精油制成的纳米分散体表现出轻微的触变性，表明从所施加的应力或应变中即时恢复的能力。振荡频率扫描测试显示1％和2％的藻酸盐纳米分散液具有类似的流体状行为。最后，证明了使用精油带来的优势被添加到了藻酸盐的积极方面，而对流动性能没有明显的影响。

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