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http://dx.doi.org/10.7317/pk.2013.37.5.587

Improvement of Physicochemical Properties of Waterborne Polyurethane/Poly(3,4-ethylenedioxythiophene) Hybrid Thin Films  

Ko, Young Soo (Department of Chemical Engineering, Kongju National University)
Yim, Jin-Heong (Division of Advanced Materials Engineering, Kongju National University)
Publication Information
Polymer(Korea) / v.37, no.5, 2013 , pp. 587-591 More about this Journal
Abstract
Poly(3,4-ethylenedioxythiophene) (PEDOT) has good properties such as high conductivity, optical transmittance, and chemical stability, while offering relatively weak physicochemical properties. The main purpose of this paper is the improvement of physicochemical properties such as solvent resistance and pencil hardness of PEDOT. Carboxyl groups in the anionic type waterborne polyurethane (WPU) chains can effectively crosslink each other in the presence of aziridine, resulting in physicochemically robust PEDOT/WPU organic-organic hybrid conductive thin films. The electrical conductivity, optical properties, and physicochemical properties of the hybrid conductive film were compared by varying the solid content and WPU portion in the coating precursor solution. From the results, the transparency and surface resistance of the hybrid film show a decreasing tendency with increasing solid content in the coating precursor. Moreover, solvent resistance and hardness were dramatically enhanced by hybridization of PEDOT and crosslinked WPU due to curing reactions between carboxyl groups.
Keywords
conducting polymer; PEDOT; waterborne polyurethane; aziridine; hardness; solvent resistance;
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