摘要
利用静电纺丝法在轴向磁场辅助下成功制备了含有Fe_3O_4颗粒的聚乙烯醇(PVA)磁性纳米纤维,纤维直径为250~715 nm。通过引入轴向磁场,显著降低了制备磁性纳米纤维所需的电压值,从而大幅降低了实验危险性和操作难度。研究了静电纺丝过程中喷头处三类射流状态,以及形成稳定泰勒锥射流的实验参数,分析了轴向磁感应强度与电压值之间的关系,提出了静电纺丝制备优化实验条件,为静电纺丝制备Fe_3O_4/PVA纳米纤维提供了实验和理论指导。磁场辅助静电纺丝法可应用于各类磁性纳米纤维的制备,具有较高的工业应用价值。
The Fe3O4/polyvinyl alcohol （PVA） magnetic nanofibers were successfully fabricated by electrospinning with an axial magnetic field. The fiber diameters are 250 - 715 nm. By intro- ducing the axial magnetic field, the needed voltage is significantly reduced during the fabrication of magnetic nanofibers, and then the experimental risk and operation difficulty greatly decrease. The three modes of jets at the nozzle during the electrospinning and the experiment parameters for forming the stable Taylor cone jet were studied. The relationship between the axial magnetic induction intensity and voltage was analyzed. The optimized experimental conditions of the elec- trospinning were proposed. This provides the guidelines for experimental and theoretical investi gation of Fe304/PVA nanofibers fabricated by the electrospinning. This approach can be used {or fabrication of various kinds of magnetic nanofibers and has a great potential for industrial applica- tions.
出处
《微纳电子技术》
北大核心
2017年第10期706-709,724,共5页
Micronanoelectronic Technology
基金
国家自然科学基金资助项目(51305165)
浙江省自然科学基金重点资助项目(LZ14E050002)
2016年度浙江省大学生科技创新活动计划暨新苗人才计划资助项目(2016R417041)
关键词
静电纺丝
磁场
纳米纤维
泰勒锥
纳米颗粒
electrospinning
magnetic field
nanofiber
Taylor cone
nanoparticle
