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http://dx.doi.org/10.5012/bkcs.2011.32.8.2661

Effect of Structural and Morphological Changes on the Conductivity of Stretched PANI-DBSA/HIPS Film  

Lee, Jong-Hyeok (Department of Chemistry, The University of Suwon)
Kim, Eun-Ok (Department of Chemistry, The University of Suwon)
Publication Information
Bulletin of the Korean Chemical Society / v.32, no.8, 2011 , pp. 2661-2665 More about this Journal
Abstract
We studied the effect of structural and morphological changes on the conductivity of a stretched conducting polymer film. To improve the poor processability of polyaniline, we used dodecylbenzenesulfonic acid as both a surfactant and a dopant during emulsion polymerization, followed by blending with high-impact polystyrene. UV-Vis/NIR spectra were obtained to observe conformational changes, and SEM and AFM were used to investigate morphological changes. FT-IR dichroism was applied to determine the microscopic orientation, and XRD patterns were obtained for quantitative crystallinity analysis. The electrical conductivity (${\sigma}_{\parallel}/{\sigma}_{\perp}$) was measured as a function of draw ratio. We found a clear correlation between morphological changes and (${\sigma}_{\parallel}/{\sigma}_{\perp}$), especially at the stretching limit. The conductivity of the films can be modified according to the desired application by controlling their structure and morphology.
Keywords
Polyaniline; PANI-DBSA/HIPS; Stretch orientation; Morphology;
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