论文部分内容阅读
借助高挥发溶剂引发的热致相分离原理,以二氯甲烷/丙酮为溶剂,通过静电纺丝技术制备二醋酸纤维素多孔超细纤维。通过正交试验,对影响二醋酸超细纤维比表面积的5个主要因素(溶剂配比、溶液浓度、纺丝电压、接收距离和纺丝速度)在4个水平上进行了优化筛选。以纤维的比表面积为考察目标,获得了最佳纺丝工艺条件:二氯甲烷∶丙酮=7∶3,纺丝速度为1mL/h,接收距离为10cm,纺丝电压为24kV,纺丝浓度为3.5%(质量分数)。在5个因素中,溶剂配比对纤维比表面积的影响最为显著。且经过优化,最终得到了比表面积为(23.1694±0.3256)m~2/g的多孔超细二醋酸纤维。
With the principle of thermal induced phase separation caused by high volatile solvents, cellulose diacetate porous ultrafine fibers were prepared by electrospinning using methylene chloride / acetone as solvent. Through orthogonal experiment, five major factors (solvent ratio, solution concentration, spinning voltage, receiving distance and spinning speed) affecting the specific surface area of ultra-fine fiber of diacetate were optimized and screened at four levels. The optimum spinning conditions were obtained by the specific surface area of the fiber: dichloromethane: acetone = 7: 3, spinning speed 1mL / h, receiving distance 10cm, spinning voltage 24kV, spinning concentration Is 3.5% (mass fraction). Among the five factors, the effect of solvent ratio on the specific surface area of the fiber is the most significant. After optimization, porous ultrafine diacetate fiber with specific surface area of (23.1694 ± 0.3256) m ~ 2 / g was obtained.