PEDOT film-forming improvement by using aqueous PU

• Main Authors: Yu-jen Chen, 陳宥任
• Other Authors: 朱侯憲
• Format: Others
• Language: zh-TW
• Published: 2011
• Online Access: http://ndltd.ncl.edu.tw/handle/38249040881094410226

碩士 === 逢甲大學 === 化學工程學所 === 99 === In this study, we tried to blend PEDOT with polyurethane to improve the film forming problem of PEDOT. The experiments were divided into three parts： the first part, we dispersed EDOT in poly （4-styrenesulfonic acid） aqueous （aq.） solution, then mixed with PU aq. dispersion, and polymerized the EDOT. We observed the conductivity by using 4-points probe, to be 4.29×10-3 S/cm for sample containing 20 phr of PEDOT. We found the compatibility is not good from DSC and TGA determinations. Blending PEDOT with polyurethane can deteriorate the crystallinity of polyurethane. We observed the film by SEM, and found the surface is not smooth when PU blending with PEDOT. When the ratio of PEDOT is too high, PEDOT would appear alone in the surface. The second part experiment dissolved EDOT in DMF and blended the solution with polyurethane aq. dispersion. We tried to find the doping effect of the sulfonate functional groups on polyurethane. Sulfonate content in the blend is not a good, leading to poor conductivity. In the third part experiment we tried to prepare core （polyurethane）- shell （PEDOT） latex. We wished to generate core-shell latex, but the conductivity didn’t increase a lot than part one.