Linear Viscoelasticity and Time–Alcohol Superposition of Chitosan/Hyaluronic Acid Complex Coacervates

Linear Viscoelasticity and Time–Alcohol Superposition of Chitosan/Hyaluronic Acid Complex Coacervates
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线性粘弹性和时间 — 壳聚糖/透明质酸复合凝聚层的醇叠加

DOI:
10.1021/acsapm.1c01411
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发表时间:
2022
影响因子:
5
通讯作者:
Perry, Sarah L.
Perry, Sarah L.
中科院分区:
化学2区
文献类型:
--
作者:
Sun, Juanfeng;Schiffman, Jessica D.;Perry, Sarah L.

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络合凝聚是由带相反电荷的巨离子络合而产生的一种结合的液-液相分离现象。众所周知,所得到的凝聚物的相行为和流变特性可以随着存在的各种物质(即宏离子、盐和溶液条件)的特性而变化,但溶剂质量的影响很少被研究。本文描述了在天然聚合物壳聚糖和透明质酸的复合凝聚物中加入少量甲醇或乙醇的效果。研究了共溶剂的加入对凝聚物相行为和线性粘弹性的影响。最后,我们探索了不仅使用时间-盐叠加,而且使用时间-酒精和时间-盐-酒精叠加的潜力,以提供对凝聚流变学的见解。
Complex coacervation is an associative liquid–liquid phase separation phenomenon resulting from the complexation of oppositely charged macroions. While it is well-known that the phase behavior and rheological character of the resulting coacervates can vary as a function of the identity of the various species present (i.e., macroions, salt, and solution conditions), the effect of solvent quality has been rarely studied. Here, the effect of adding small amounts of either methanol or ethanol to complex coacervates of the natural polymers chitosan and hyaluronic acid is described. The effect of cosolvent addition on the phase behavior and linear viscoelasticity of the resulting coacervates is characterized. Lastly, we explore the potential for using not only time–salt superposition but also time–alcohol and time–salt–alcohol superposition to provide insight into coacervate rheology.
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发表时间: 2021-05-17
期刊: MACROMOLECULES
影响因子: 5.5
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