静电纺丝法制备魔芋葡甘聚糖/明胶复合纤维

Preparation of Composite Fibers of KGM/GE by Electrospinning

采用魔芋葡甘聚糖和明胶为主要原料,冰乙酸为溶剂,通过高压静电纺丝技术制备一种复合纤维材料。采用SEM对纺丝电压、环境温度、流速等不同工艺参数下获得的复合纤维的微观形貌和直径进行表征,并对优化条件下制备的魔芋葡甘聚糖/明胶复合纤维膜和纯明胶电纺纤维膜的力学性能进行研究。结果表明,在魔芋葡甘聚糖/明胶共混液质量浓度为25%(100 mL溶剂中明胶/魔芋葡甘聚糖质量(g)比为24.80.2)、纺丝电压20 kV、纺丝速率0.002 5 mL·s-1、电纺温度45℃和电纺接收距离15 cm的情况下,获得直径分布于115 nm至126 nm的复合纤维。魔芋葡甘聚糖/明胶复合纤维膜的力学性能较纯明胶电纺纤维膜提高。

Konjac glucomannan （KGM） , gelatin （GE） GE composite fibers were prepared by electrospinning and acetic acid were used in this study. KGM/ The influence of process parameters on the fiber morphology and diameter were investigated, such as spinning voltage, temperature and flow rate, by Scanning Electron Microscope （SEM）. And the mechanical properties of those composite and pure gelatin fibers were tested. The results show that the composite fibers with an average diameter ranging from 115 nm to 126 nm are fabricated at the following conditions ： 25% of the concentration of KGM/GE blend sol （weight ratio of gelatin to KGM =24.8 ： 0.2 in 100 mL）, 20 kV of electric voltage, 0. 002 5 mL ~ s-1 of the feeding rate, 45 ~C of the spinning temperature and 15 cm of receiving distance. Compared to the pure gelatin fiber membrane, the mechanical properties of KGM/GE fiber membrane improve.