Modeling and Simulation of the Ion-Binding-Mediated Swelling Dynamics of Mucin-like Polyelectrolyte Gels.
Modeling and Simulation of the Ion-Binding-Mediated Swelling Dynamics of Mucin-like Polyelectrolyte Gels.
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DOI：
10.3390/gels7040244
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发表时间：
2021-11-30
期刊：
影响因子：
--
通讯作者：
Fogelson AL
中科院分区：
文献类型：
--
作者：
Du J;Lewis OL;Keener JP;Fogelson AL
聚电解质凝胶中的体积相变在许多生物物理过程如DNA包装、神经兴奋和细胞分泌中起重要作用。这些带电聚合物凝胶的溶胀和去溶胀强烈依赖于它们的离子环境。在本文中，我们提出了一个扩展到我们以前的双流体模型的离子结合介导的凝胶溶胀。扩展模型消除了网络和溶剂颗粒之间的尺寸相似性的假设，这使得它适合于调查一个大家庭的生物相关问题。该模型将聚电解质凝胶视为两种材料的混合物，网络和溶剂。凝胶溶胀的动力学由这两种材料中的每一种上的机械力和化学力之间的平衡控制。基于该模型的模拟表明，化学力显着影响的离子和网络之间的结合/解结合反应，以及由此产生的凝胶内的电荷分布。离子浴浓度的溶胀速率的依赖性进行了分析，这种分析突出了离子的电迁移和诱导电场在调节凝胶溶胀的重要性。
Volume phase transitions in polyeletrolyte gels play important roles in many biophysical processes such as DNA packaging, nerve excitation, and cellular secretion. The swelling and deswelling of these charged polymer gels depend strongly on their ionic environment. In this paper, we present an extension to our previous two-fluid model for ion-binding-mediated gel swelling. The extended model eliminates the assumptions about the size similarity between the network and solvent particles, which makes it suitable for investigating of a large family of biologically relevant problems. The model treats the polyeletrolyte gel as a mixture of two materials, the network and the solvent. The dynamics of gel swelling is governed by the balance between the mechanical and chemical forces on each of these two materials. Simulations based on the model illustrate that the chemical forces are significantly influenced by the binding/unbinding reactions between the ions and the network, as well as the resulting distribution of charges within the gel. The dependence of the swelling rate on ionic bath concentrations is analyzed and this analysis highlights the importance of the electromigration of ions and the induced electric field in regulating gel swelling.
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影响因子：
3.4
作者：
KATCHALSKY, A;MICHAELI, I
通讯作者：
MICHAELI, I
DOI：
10.3390/gels7010020
发表时间：
2021-02-18
期刊：
Gels (Basel, Switzerland)
影响因子：
--
作者：
Mussel M;Basser PJ;Horkay F
通讯作者：
Horkay F
DOI：
10.1088/0965-0393/23/5/055005
发表时间：
2015-07-01
影响因子：
1.8
作者：
Drozdov, A. D.;Christiansen, J. deClaville
通讯作者：
Christiansen, J. deClaville
影响因子：
4.8
作者：
Raynal, BDE;Hardingham, TE;Thornton, DJ
通讯作者：
Thornton, DJ
影响因子：
1.2
作者：
Sircar, Sarthok;Roberts, Anthony
通讯作者：
Roberts, Anthony