Shear Force Fiber Spinning: Process Parameter and Polymer Solution Property Considerations

analysis the diffusion process for polymer solution using FTIR-ART technique: special considerations

Simulation of Multifilament Semicrystalline Polymer Fiber Melt-Spinning

The goal of this effort is to provide an accurate simulation of multifilament fiber melt spinning, applicable for a wide range of material and process conditions. For ease of use, the model should run on a standard laptop or desktop computer in reasonable time (one hour or less). Most melt spinning models simulate the formation of a single filament, with little or no attention given to multifil...

Analysis of Milling Process Parameters and their Influence on Glass Fiber Reinforced Polymer Composites (RESEARCH NOTE)

Milling of fiber reinforced polymer composites is of great importance for integrated composites with other mating parts. Improper selection of cutting process parameters, excessive cutting forces and other machining conditions would result in rejection of components. Therefore, machining conditions are optimized to reduce the machining forces and damages. This work reports practical experiments...

Structure Evolution of a Polymer Solution at High Shear Rates

We utilized large angle light scattering to study the structure of a sheared semidilute polymer solution. Below a critical shear rate γ̆c we observe an enhancement of concentration fluctuations in accordance with previous experimental and theoretical work. Above γ̆c we find dramatic changes in the transient and steady state scattering behavior which indicate a shear-induced phase separation. A ne...

Multiple shear-banding transitions in a supramolecular polymer solution.

We report on the nonlinear rheology of a reversible supramolecular polymer based on hydrogen bonding. The coupling between the flow-induced chain alignment and breakage and recombination of bonds between monomers leads to a very unusual flow behavior. Measured velocity profiles indicate three different shear-banding regimes upon increasing shear rate, each with different characteristics. While ...