We proposed recently a theoretical description for hydrodynamic flows in inhomogeneous liquids in the vicinity of solid interfaces, consistent with current theoretical descriptions of the thermodynamical equilibrium of liquids in the vicinity of solid surfaces and with the Onsager formalism for linear response theory in out-of-equilibrium liquids. We showed that these equations allow for describing diffusio-osmosis along a capillary and also wetting/dewetting dynamics of liquids on a solid substrate. We now apply this physical model to the wetting/dewetting dynamics of nano-particles in polymer blends, showing how they reach equilibrium at the interface between two liquids at rest and how they migrate from the non-preferred polymer to the preferred one under applied flow.

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纳米粒子在聚合物-聚合物界面上的迁移：理论与模拟

我们最近提出了对固体界面附近非均匀液体中流体动力流动的理论描述，与目前对固体表面附近液体的热力学平衡的理论描述一致，并与 Onsager 形式主义的线性响应理论一致。平衡液体。我们表明，这些方程可以描述沿毛细管的扩散渗透以及液体在固体基质上的润湿/反润湿动力学。我们现在将此物理模型应用于聚合物共混物中纳米颗粒的润湿/反润湿动力学，展示它们如何在静止的两种液体之间的界面处达到平衡，以及它们如何在应用流动下从非首选聚合物迁移到首选聚合物.