Polyaniline Conductive Paints using Polystyrene, Polyester and Polyurethane Resin made from Facile Blending Method

  • HOSODA Masakazu
    Graduate Program of Human Sensing and Functional Sensor Engineering, Graduate School of Engineering, Yamagata University Maruai INC. Research and Development section
  • KURAMOTO Noriyuki
    Graduate Program of Human Sensing and Functional Sensor Engineering, Graduate School of Engineering, Yamagata University

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  • ポリスチレン, ポリエステルおよびポリウレタンを用いた簡易混合法により得られるポリアニリン導電性塗料

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Abstract

Conductive paints of polyaniline (PANI)/dodecyl benzene sulfonic acid (DBSA) composited with polystyrene (PS), polyester (PET) and polyurethane (PU) resin were prepared through a facile blending method. The extraction of PANI/DBSA from the aqueous reaction mixture was done by using a mixture of toluene and methyl ethyl ketone (MEK) (toluene : MEK=1 : 1 v/v). Then, the electrical, thermal stability and tensile properties of the prepared conductive PANI/DBSA composite films were evaluated. Almost all of the PANI/DBSA-PS, -PET and -PU composite films were found to possess relatively good conductivity and low surface resistivity for an electrostatic discharge (ESD) even at low PANI/DBSA content. Even when the PANI/DBSA content in the PANI/DBSA-PS and -PET composite was 2.5 wt%, the electrical conductivity and surface resistivity were found to be 3.92×10-4 Scm-1, 8.51×106 Ωcm-2 and 4.62×10-2 Scm-1, 7.22×104 Ωcm-2, respectively. Additionally these composite films exhibited good transparency. The highest conductivity (3.28×10-1 Scm-1) of the composite films was obtained when the PANI/DBSA content in PANI/DBSA-PS composite was 25 wt%. PANI/DBSA-PS composite film possessed the best thermal stability and the PANI/DBSA-PU composite films showed the lowest thermal stability of all evaluated samples. On the other hand, PANI/DBSA-PET composite films possessed the most elasticity when the PANI/DBSA contents were 10 and 20 wt%. However, PANI/DBSA-PU composite film possessed the most elasticity when the content was 5 wt%. PANI/DBSA-PS composite films possessed the lowest elasticity.

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