仿生水稻叶各向异性聚偏氟乙烯超疏水膜的构建及性能研究  

Construction and properties of bionic rice leaf anisotropic polyvinylidene fluoride superhydrophobic membrane

作　　者：包康 景宜 亓健伟 BAO Kang;JING Yi;QI Jian-wei(Department of Light Industry and Food,Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources,Nanjing Forestry University,Nanjing 210037,China;School of Materials and Physics,China University of Mining and Technology,Xuzhou 221116,China)

机构地区：[1]南京林业大学轻工与食品学院江苏省林业资源高效加工利用协同创新中心,江苏南京210037 [2]中国矿业大学材料与物理学院,江苏徐州221116

出　　处：《应用化工》2023年第1期78-85,共8页Applied Chemical Industry

基　　金：国家自然科学基金资助项目(31370583)。

摘　　要：通过静电纺丝技术制备了一种仿生水稻叶各向异性聚偏氟乙烯(PVDF)超疏水膜,研究了纺丝液配比、纺丝条件对聚偏氟乙烯纳米纤维膜的形貌、疏水性以及纤维取向的影响。结果表明,最优纺丝液溶剂配比为DMF/丙酮=5∶5,PVDF质量分数为22%。最优纺丝参数为:电压12 kV,纺丝液推注速度0.05 mm/min,滚筒接收转速2200 r/min,接收距离15 cm。制备出的聚偏氟乙烯纳米纤维膜具有优异的疏水性和各向异性,其与水的接触角为149.5°。同时,膜的断后伸长率为94.90%,抗拉强度16 MPa。为超疏水膜及表面制备提供了一种新的可行方法。An anisotropic polyvinylidene fluoride superhydrophobic membrane was prepared by electrostatic spinning technology, and the effects of ratios of spinning solution and spinning parameters on the morphology, hydrophobicity and fiber orientation of the prepared polyvinylidene fluoride nanofiber membrane were investigated.The result showed that the optimal spinning solution solvent ratio: DMF/acetone=5∶5,PVDF mass fraction 22%.The optimal spinning parameters were: voltage 12 kV,spinning fluid pushing speed 0.05 mm/min, drum receiving speed 2 200 r/min, and the receiving distance 15 cm.The prepared polyvinylidene fluoride nanofiber membrane had excellent hydrophobicity and anisotropy, and its contact angle with water was 149.5°.The membrane has 94.90% elongation after break and 16 MPa tensile strength, which provides a new feasible method for superhydrophobic membrane and surface preparation.

关 键 词：静电纺丝 聚偏氟乙烯超疏水膜 各向异性 纳米纤维 

分 类 号：TQ340.63[化学工程—化纤工业] TS75[轻工技术与工程—制浆造纸工程]