静电纺丝法制备醋酸纤维素纳米纤维

静电纺丝是一种利用聚合物溶液或熔体在强电场作用下形成喷射流进行纺丝加工的工艺，是一项制备纳米级纤维材料简单有效的技术．本文以六氟异丙醇和甲酸为溶剂，对静电纺丝制备醋酸纤维素纳米纤维的影响因素进行探讨，研究溶剂、电压、浓度及接收距离对纳米纤维形貌和直径的影响．研究结果表明：以六氟异丙醇（HFIP）为溶剂，当纺丝液浓度为8％、电压为15—20kV、接收版距离为16cm时，可以静电纺丝制得直径300nm的明胶纳米纤维．在本实验设定的静电纺丝基本参量范围内，醋酸纤维素溶液的浓度越大，纤维直径越大；接收距离越大，纤维直径也越大，而且容易产生纺锤状纤维；电压越大，纤维直径越小．

Prepration of Cellulose Acetate Nanofibres with Static Electricity Spinning

Electrospinning is a processing technology,using polymer solution or melt under a strong electric field,which is also a simple and effective technology to develop nanometer fiber materials.In this paper,we used hexafluoroisopropanol and formic acid as the solvent,to explore the influencing factors of using electrospinning to prepare the nano-fiber of cellulose acetate,and studied on how solvent,voltage,concentration and deposition distance impact on the morphology and diameter of nano-fiber.The results of the study show that: HFIP as solvent,when the spinning of the concentration is 8 percent,the voltage is 15-20 kV,and deposition distance is 16 cm,we could obtain the gelatin nano-fibers with the Diameter of 300 nanometer prepared by electrospinning.In this experiment,under the range of the setting basic parameters of electrospinning,the larger concentration of the cellulose acetate,the bigger the diameter of fiber;the longer the deposition distance,the bigger diameter of the fiber and is easy to produce the spindle-shaped fiber;the greater voltage,the smaller the diameter of fiber.