A nonlinear system model for electrospinning sub-100 nm polyacrylonitrile fibres

被引:21
作者
Costolo, M. A. [1 ]
Lennhoff, J. D. [1 ]
Pawle, R. [1 ]
Rietman, E. A. [1 ]
Stevens, A. E. [1 ]
机构
[1] Phys Sci Inc, Andover, MA 01810 USA
关键词
D O I
10.1088/0957-4484/19/03/035707
中图分类号
TB3 [工程材料学];
学科分类号
0805 [材料科学与工程]; 080502 [材料学];
摘要
Solutions of polyacrylonitrile (PAN) were electrospun using a range of process parameters, resulting in fibre diameters from 10 to 320 nm. A nonlinear neural network system model was used to analyse the dependence of the fibre diameter on the process parameters, and used to simulate conditions for electrospinning 40-60 nm diameter fibres. These results indicated that flow rate is most important for determining fibre diameter. It was not possible to find the appropriate conditions for electrospinning sub-25 nm fibres. Precise control of the ambient temperature and relative humidity will be critical to producing electrospun fibres that are sub-25 nm. Further, it is unlikely that sub-25 nm fibres will be produced without significant changes in the electrospinning apparatus, for example, by use of focusing and jet-steering fields, alternate carrier gases to modify the discharge characteristics, or patterned electrospinning.
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页数:9
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