Molecular orientation evolution and solvent evaporation during electrospinning of atactic polystyrene using real-time Raman spectroscopy.

摘要: Real-time Raman spectroscopy was successfully utilized to monitor solvent evaporation and molecular orientation during electrospinning of atactic polystyrene (a-PS). The use a binary system N,N-dimethyl formamide (DMF) tetrahydrofuran (THF) provided stable, straight jet the experiment. prominent bands centered at 866 cm–1, 914 1004 unique DMF, THF, a-PS, respectively, were used concentration changes along for two different a-PS solutions. In addition, in relative intensity radial skeletal ring vibration aromatic group 623 cm–1 polarization geometries, ZZ YY, monitored information. This study reports first quantitative vibrational spectroscopic measurement process. A significant change observed are explained relation