Modeling of solvent evaporation from polymer jets in electrospinning

摘要: Solvent evaporation plays a critical role in nanofiber formation electrospinning. Here, we present nonlinear mass diffusion-transfer model describing the drying process dilute polymer solution jets. The is used to predict transient solvent concentration profiles polyacrylonitrile/N,N-dimethylformamide (PAN/DMF) jets with initial radii ranging from 50 μm down 100 nm. Numerical simulations demonstrate high inhomogeneity of over jet cross-section microscopic degree decreases for finer, submicron simulated time rapidly decreasing radius, seconds microjets single milliseconds nanojets. results need further improved coupled multiphysics models electrospinning