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Nonhomogeneous flow of micellar solutions: A kinetic—network theory approach
AIChE Journal ( IF 3.7 ) Pub Date : 2018-01-17 , DOI: 10.1002/aic.16079
J. Paulo García-Sandoval 1 , A. Martín del Campo 1 , F. Bautista 1 , O. Manero 2 , Jorge E. Puig 1
Affiliation  

The rheological behavior of micellar solutions is analyzed under nonhomogeneous velocity and stress flow conditions. The framework is based on the extended irreversible thermodynamics and the transient network formulation coupled to the underlying kinetics embodying two relevant processes: formation of wormlike chains from a free micellar solution through a thermally activated process and their flow induced degradation. The second kinetic process consists in the formation of entanglements from the free wormlike chains and their flow‐induced breakage. These processes are modeled in a coupled kinetic scheme constituted by a set of reversible kinetic equations describing the evolution in average of the three microstates (free short rod‐like micelles, free wormlike chains, and entangled wormlike chains) that reflect the complexity of macromolecular interactions. The predictions of the shear stress and first normal stress difference as a function of shear‐rate under banded flow are in good agreement with experimental data. © 2018 American Institute of Chemical Engineers AIChE J, 64: 2277–2292, 2018

中文翻译:

胶束溶液的非均匀流动:动力学-网络理论方法

在非均匀速度和应力流条件下分析了胶束溶液的流变行为。该框架基于扩展的不可逆热力学和瞬态网络公式,并结合了体现两个相关过程的基本动力学:通过热活化过程从游离的胶束溶液中形成蠕虫状链,以及它们的流动引起的降解。第二个动力学过程是由自由的蠕虫状链形成缠结及其流动引起的断裂。这些过程以耦合动力学方案建模,该动力学方案由一组可逆的动力学方程式组成,这些方程式描述了三种微状态(游离短杆状胶束,游离蠕虫状链,和缠绕的蠕虫状链)反映了大分子相互作用的复杂性。带状流下剪切应力和第一法向应力差随剪切率变化的预测与实验数据吻合良好。©2018美国化学工程师学会AIChE J,64:2277–2292,2018年
更新日期:2018-01-17
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