熔体微分静电纺丝法制备PP微孔纤维及亲水实验

Microporous PP Fibers Produced by Melt Differential Electrospinning and Hydrophilic Experiment

分别使用三种不同成孔剂（纳米CaCO3、固体石蜡、混合无机盐）和亲水剂（亚雷森7008）与聚丙烯（PP）熔融共混，通过自制熔体微分静电纺丝装置制备PP复合纤维，再利用后整理方法除去三种成孔剂，得到亲水型PP微孔纤维。结果表明，熔体微分静电纺丝法可以成功制备三种不同共混体系的复合纤维，纤维直径分别集中在5～6μm（纳米CaCO3），2～3μm（混合无机盐）和1—2μm（石蜡），明显小于纯PP纤维；利用后处理方法均得到具有不同表面粗糙度并带有微孔结构的复合纤维；水分子沿纤维的水平输送与竖直输送过程是相互制约的。

Three different pore-forming agents （nanometer calcium carbonate, paraffin wax, mixed inorganic salt）, hydrophilic additive （Arstar7008） and polypropylene were used as raw materials by means of melt blending to produce polypropylene composite fibers through self-made melt differential electrospinning device, and post-processing methods was used to remove three kinds of pore-forming agents, in which way hydrophilic microporous polypropylene fibers were got. The results show that melt differential electrospinning methods can successfully produce composite fibers of three different melt blending systems, and the diameters respectively range from 5 to 6 μ m（nanometer calcium carbonate）,2 to 3μ m（paraffin wax）, 1 to 2 μ m（inorganic salt）, are all less than that of pure polypropylene ; various surface roughness and microporous structure of the composite fibers are got by post- processing methods ; horizontal and vertical transportation of water molecules along the fiber restrict each other.