【摘要】 以水为溶剂制备明胶溶液进行静电纺丝,在60~65℃纺得明胶超细纤维,探讨了明胶用量、静电电压及纤网收集距离等因素对明胶水溶液静电纺丝成形的影响.结果表明:在60~65℃范围内,明胶溶液的黏度随明胶用量的增加而大幅上升,呈2次指数关系;随明胶用量的降低(从25%降到15%),所得纤维平均直径减小(从266.5 nm降为167.7 nm);随静电纺丝电压的升高,纤维直径下降,当电压大于17 kV后其变化趋于平缓;静电纺丝收集距离在11~21 cm之间变化时,所得的纤维直径在165~210 nm之间,变化幅度不大.更多还原

【Abstract】 Ultrafine 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 17kV,and that the diameter slightly changes from 165 to 210nm when the spinning distance varies form 11 to 21cm.更多还原