Polyaniline/poly(methyl methacrylate) coaxial fibers: The fabrication and effects of the solution properties on the morphology of electrospun core fibers

被引:91
作者
Dong, H
Nyame, V
Macdiarmid, AG
Jones, WE [1 ]
机构
[1] SUNY Binghamton, Dept Chem, Binghamton, NY 13902 USA
[2] Univ Penn, Dept Chem, Philadelphia, PA 19104 USA
关键词
coaxial fibers; dielectric constant; electrospinning; polyaniline; solution properties; conducting polymers;
D O I
10.1002/polb.20253
中图分类号
O63 [高分子化学(高聚物)];
学科分类号
070305 ; 080501 ; 081704 ;
摘要
Electrically conductive polyaniline (PANi)/poly(methyl methacrylate) (PMMA) coaxial fibers were prepared through the chemical deposition of PANi onto preformed PMMA fibers via in situ polymerization. PMMA fibers were prepared as core materials via electrospinning. Spectral studies and scanning electron microscopy observations indicated the formation of PANi/PMMA coaxial fibers with a diameter of approximately 290 nm and a PANi layer thickness of approximately 30 nm. The conductivity of the PANi/PMMA coaxial fibers was significantly higher than that of electrospun fibers of PANi/poly(ethylene oxide) blends and blend cast films of the same PANi composition. To reproducibly generate uniform-core polymer fibers, the organic solution properties that affected the morphology and diameter of the electrospun fibers were investigated. The polymer molecular weight, solution concentration, solvent dielectric constant, and addition of soluble organic salts were strongly correlated to the morphology of the electrospun fiber mat. In particular, the dielectric constants of the solvents substantially influenced both the fiber diameter and bead formation. (C) 2004 Wiley Periodicals, Inc.
引用
收藏
页码:3934 / 3942
页数:9
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