采用静电纺丝法制备了聚丙烯腈纳米纤维,分析了溶液浓度、电压、接收距离、溶剂等因素对纤维形态的影响.结果表明,以溶剂为DMF配制的电纺液可纺范围在6%～21%,溶剂为DMAc配制的电纺液可纺范围为6%～17%;通过正交实验证明电纺溶液浓度和溶剂对纤维直径影响较明显;减小电纺溶液浓度,一定范围内适当的增加电压、减小距离可得到直径更细的纳米纤维;在电纺液浓度为11%、接收距离为20 cm、电压为25 kV时,溶剂为DMF的电纺液可制得直径在80 nm左右的纳米纤维无纺布.
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