Fabrication of polyvinylidene fluoride tree-like nanofiber via one-step electrospinning
Fabrication of polyvinylidene fluoride tree-like nanofiber via one-step electrospinning
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DOI：
10.1016/j.matdes.2015.12.037
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发表时间：
2016-02-15
影响因子：
8.4
通讯作者：
Cheng, Bowen
中科院分区：
文献类型：
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作者：
Li, Zongjie;Xu, Yongzheng;Cheng, Bowen
4通过向聚偏氟乙烯（PVDF）溶液中加入一定量的盐，采用一步静电纺丝法可控制备了一种新型的PVDF树枝状纳米纤维。通过对高速摄影照片的分析，提出了树枝状纳米纤维形成的可能机理，结果表明树枝状纳米纤维的形成是由于射流的分裂。研究了食盐种类、食盐含量及工艺参数对苹果树枝条含量的影响。采用场发射扫描电子显微镜（FE-SEM）、能谱仪（EDS）、X射线衍射仪（XRD）、孔径仪和力学性能测试等对静电纺纳米纤维进行了表征。结果表明，PVDF/TBAC树枝状纳米纤维具有较好的结晶度和机械强度。由于树状结构导致的平均孔径的减小和对有机溶剂的耐受性，使其成为膜分离的潜在候选物。(C)2015爱思唯尔有限公司版权所有。
4 A novel polyvinylidene fluoride (PVDF) tree-like nanofiber was controllably fabricated via one-step electrospinning by adding certain amount of salt into PVDF solution. A possible mechanism for the formation of the tree-like nanofibers was proposed by analyzing high speed camera photos of the spin jet and the result showed that the formation of tree-like nanofibers was due to the splitting of jets. The effects of salt type, salt content and processing parameter on the content of tree-like branches were investigated. The electrospun nanofibers were characterized by field emission scanning electron microscopy (FE-SEM), energy disperse spectroscopy (EDS), X-ray diffraction (XRD), pore size meter and mechanical properties measurement. It was found that the PVDF/TBAC tree-like nanofibers with improved crystallinity and mechanical strength. The decreased average pore size caused by the tree-like structure and the resistance to organic solvent, can make it as a potential candidate for membrane separation. (C) 2015 Elsevier Ltd. All rights reserved.