poly(vinylidene fluoride) (pvdf) fibers with two molecular weights were prepared via electrospinning process. in this process, the concentration of spinning depended drastically on the gelation process. also, it was experimentally smaller than obtained concentration in the solution entanglement number approach (sena). proof of this incompatibility was explained by the properties of pvdf and its...

The Flory-Huggins theory of flexible polymers mixtures @P. J. Flory, Principles of Polymer Chemistry ~Cornell University Press, Ithaca, 1953!# and the Lebwohl-Lasher model of nematogens @G. Lasher, Phys. Rev. A 5, 1350 ~1972!; P. A. Lebwohl and G. Lasher, ibid. 6, 426 ~1972!# are combined to understand the phase behaviors of mixtures of flexible polymers ~coils! and small molecular liquid cryst...

A second virial theory is presented to study the influence of a slight flexibility on the nematic-smectic A transition in fluids of freely rotating hard rods. The spinodal is loc~ted by performing a bifurcation analysis of the equation describing the single-particle distribution function. A closed expression for the structure factor is also derived. The structure factor diverges at the spinodal...

Colloid-polymer mixtures can undergo spinodal decomposition into colloid-rich and colloid-poor regions. Gelation results when interconnected colloid-rich regions solidify. We show that this occurs when these regions undergo a glass transition, leading to dynamic arrest of the spinodal decomposition. The characteristic length scale of the gel decreases with increasing quench depth, and the noner...

We present simulations of isothermal liquid-vapor spinodal decomposition of a van der Waals fluid, occurring after quenching it from a single-phase equilibrium state to the unsteady two-phase region of its phase diagram, showing that the process is governed by the density gradient-driven, non-equilibrium Korteweg body force. Experimentally, most studies on spinodal decomposition have been perfo...

Using a modified Cahn-Hilliard-Cook theory for spinodal decomposition in binary mixture that exhibits both diffusion and interconversion dynamics, we derive the time-dependent structure factor concentration fluctuations. We compare obtain qualitative agreement with simulations of temporal evolution order parameter nonequilibrium Ising/lattice-gas hybrid model presence an external source forcefu...

Aggregation mechanisms of emulsions at high initial volume fractions (φ0 > 0.01) is studied using light scattering. We use emulsion droplets which can be made unstable towards aggregation by a temperature quench. For deep quenches and 0.1 > φ0 > 0.01, the aggregation mechanism is identified as diffusion-limited cluster aggregation (DLCA). An ordering of the clusters, which is reflected by a pea...

We use a Convolutional Neural Network (CNN) and two logistic regression models to predict the probability of nucleation in two-dimensional Ising model. The three successfully for Nearest Neighbor model which classical is observed. CNN outperforms near spinodal Long Range model, but accuracy its predictions decreases as quenches approach spinodal. Occlusion analysis suggests that this decrease d...

We study the process of spinodal decomposition in a scalar quantum field theory that is quenched from an equilibrium disordered initial state at Ti > Tf to a final state at Tf ≈ 0. The process of formation and growth of correlated domains is studied in a Hartree approximation. We find an approximate scaling law for the size of the domains ξD(t) ≈ √ tξ0 at long times for weakly coupled theories,...

The mechanism of quark confinement continues to be one of the stumbling block in particle physics and one tends to shelve it by the help of more or less ad hoc models motivated by QCD. Instead of a detailed construction of ”The Mechanism” which obviously involves some highly technical and non-perturbative issues of QCD we suggest in this talk a rather well known phenomenon, spinodal instability...