当前位置:
X-MOL 学术
›
Macromolecules
›
论文详情
Our official English website, www.x-mol.net, welcomes your
feedback! (Note: you will need to create a separate account there.)
Oscillatory Interactions between Colloidal Particles in Polyelectrolyte Solutions: Linear Response Theory
Macromolecules ( IF 5.1 ) Pub Date : 2024-08-16 , DOI: 10.1021/acs.macromol.4c01405
C. M. Martens 1, 2 , R. Tuinier 1, 2 , M. Vis 1, 2
Macromolecules ( IF 5.1 ) Pub Date : 2024-08-16 , DOI: 10.1021/acs.macromol.4c01405
C. M. Martens 1, 2 , R. Tuinier 1, 2 , M. Vis 1, 2
Affiliation
An analytical theory for the interaction potential between surfaces (e.g., colloids) in polyelectrolyte solutions is derived. A superposition of a Debye–Hückel interaction potential and a damped oscillatory interaction potential, commonly employed to fit measured colloidal interactions, follows naturally from our theory. Using appropriate expressions for the structure factor of the bulk polyelectrolyte solution in the dilute, semidilute and concentrated regimes explicit expressions for the wavelength and decay length of the oscillatory part of the interaction potential were derived. Quantitative agreement between experimental measurements and our theory is found in the dilute and semidilute concentration regimes. In the concentrated regime, the theory predicts very weak oscillations and a large attractive region due to the electrostatically induced depletion interactions, in agreement with simulations.
中文翻译:
聚电解质溶液中胶体颗粒之间的振荡相互作用:线性响应理论
导出了聚电解质溶液中表面(例如胶体)之间相互作用势的分析理论。德拜-休克尔相互作用势和阻尼振荡相互作用势的叠加通常用于拟合测量的胶体相互作用,这自然地从我们的理论中得出。使用稀释、半稀释和浓缩状态下本体聚电解质溶液的结构因子的适当表达式,导出了相互作用势的振荡部分的波长和衰减长度的明确表达式。在稀释和半稀释浓度范围中发现实验测量结果与我们的理论之间的定量一致性。在集中状态下,该理论预测由于静电引起的耗尽相互作用,会出现非常弱的振荡和一个大的吸引区域,这与模拟一致。
更新日期:2024-08-16
中文翻译:
聚电解质溶液中胶体颗粒之间的振荡相互作用:线性响应理论
导出了聚电解质溶液中表面(例如胶体)之间相互作用势的分析理论。德拜-休克尔相互作用势和阻尼振荡相互作用势的叠加通常用于拟合测量的胶体相互作用,这自然地从我们的理论中得出。使用稀释、半稀释和浓缩状态下本体聚电解质溶液的结构因子的适当表达式,导出了相互作用势的振荡部分的波长和衰减长度的明确表达式。在稀释和半稀释浓度范围中发现实验测量结果与我们的理论之间的定量一致性。在集中状态下,该理论预测由于静电引起的耗尽相互作用,会出现非常弱的振荡和一个大的吸引区域,这与模拟一致。