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Preparation of the Conducting Polyaniline-HIPS Blends for Injection Molding by Toluene Solution Casting  

Lee, Jong-Hyeok (Department of Chemistry, The University of Suwon)
Kim, Eun-Ok (Department of Chemistry, The University of Suwon)
Publication Information
Polymer(Korea) / v.33, no.3, 2009 , pp. 203-206 More about this Journal
Abstract
Polyaniline Emeraldine salt (PANI-salt) prepared by the common chemical oxidative polymerization caused the corrosion of the metallic injection mold by protonic acid such as HCl which used as a dopant. PANI-salt, polyaniline doped with dodecylbenzenesulfonic acid (DBSA), was obtained by the emulsion polymerization in nonpolar organic solvent, toluene. In this study DBSA was used as a dopant along with a surfactant. PANI-salt and high impact polystyrene (HIPS) have a good solubility in toluene. Blends with different ratio of PANI and HIPS were prepared through a solution-cast blending. The structure of PANI-salt was characterized by FT-IR and UV-Vis. The morphology, thermal, and electrical properties for PANI-HIPS blends were investigated. Injection molded under $103^{\circ}C$, 120 psi, PANI-HIPS showed the highest electrical conductivity ($6.02{\times}10^{-5}\;S/cm$) after blending PANI (50 mL) and HIPS (1 g).
Keywords
injection molding; polyaniline-HIPS blend; solution-cast blending; emulsion polymerization; conducting polymer;
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