Effects of Solvents on the Morphology and Conductivity of Poly(3,4-ethylenedioxythiophene):Poly(styrenesulfonate) Nanofibers

被引:45
作者
Kara, Meryem O. Pehlivaner [1 ]
Frey, Margaret W. [1 ]
机构
[1] Cornell Univ, Dept Fiber Sci & Apparel Design, Ithaca, NY 14853 USA
基金
美国国家科学基金会;
关键词
conducting polymers; electrospinning; fibers; nanostructured polymers; ELECTRICAL-CONDUCTIVITY; ELECTROSPUN NANOFIBERS; POLY(3,4-ETHYLENEDIOXYTHIOPHENE)/POLY(4-STYRENE-SULFONATE); ENHANCEMENT;
D O I
10.1002/app.40305
中图分类号
O63 [高分子化学(高聚物)];
学科分类号
070305 ; 080501 ; 081704 ;
摘要
In this study, the effect of solvents on the morphology and conductivity of poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate)(PEDOT:PSS) nanofibers is investigated. Conductive PEDOT:PSS nanofibers are electrospun by dissolving a fiber-forming polymer, polyvinyl alcohol, in an aqueous dispersion of PEDOT:PSS. The conductivity of PEDOT:PSS nanofibers is enhanced 15-fold by addition of DMSO and almost 30-fold by addition of ethylene glycol to the spinning dopes. This improvement is attributed to the change in the conformation of the PEDOT chains from the coiled benzoid to the extended coil quinoid structure as confirmed by Raman spectroscopy, X-ray diffraction, and differential scanning calorimetry. Scanning electron microscopy images show that less beady and more uniform fiber morphology could be obtained by incorporation of ethylene glycol in the spinning dopes. (c) 2013 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2014, 131, 40305.
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页数:8
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