Abstract:

Uhrafine fibers of gelatin were spun from aqueous gelatin solution via an electrostatic spinning process at 60 - 65 ℃, and the effects of the gelatin dosage, the electrostatic voltage and the spinning distance on the spinning process were investigated. The results indicate that, at 60 - 65 ℃, the viscosity of gelatin/water system greatly increases with the dosage of gelatin in a secondary exponential relationship, that the average diameter of fibers decreases from 266.5nm to 167.7nm corresponding to the gelatin dosage decreasing from 25% to 15% , that the fiber diameter decreases with the increase of spinning voltage to a constant at a voltage of more than 17 kV, and that the diameter slightly changes from 165 to 210 nm when the spinning distance varies form 11 to 21 cm.

Key words: electrostatic spinning, gelatin, uhrafine fiber