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

Masakazu Hosoda, N. Kuramoto
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Abstract

Conductive paints of polyaniline (PANT)/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 X 10 - 4 Scm -1 , 8.51x10 6 Ωcm -2 and 4.62 X 10 - 2 Scm -1 , 7.22 X 10 4 Ωcm -2 , respectively. Additionally these composite films exhibited good transparency. The highest conductivity (3.28 X 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.
聚苯胺导电涂料采用聚苯乙烯、聚酯和聚氨酯树脂混炼而成
以聚苯乙烯(PS)、聚酯(PET)和聚氨酯(PU)为原料,采用简便共混法制备了聚苯胺(PANT)/十二烷基苯磺酸(DBSA)导电涂料。采用甲苯与甲基乙基酮(MEK)的混合物(甲苯:MEK= 1:1 v/v)从水溶液中提取聚苯胺/DBSA,并对制备的聚苯胺/DBSA导电复合膜的电稳定性、热稳定性和拉伸性能进行了评价。几乎所有的聚苯胺/DBSA- ps、-PET和-PU复合膜在低聚苯胺/DBSA含量下也具有相对较好的导电性和较低的静电放电表面电阻率。当PANI/DBSA- ps和- PET复合材料中PANI/DBSA含量为2.5 wt %时,其电导率和表面电阻率分别为3.92 X 10 - 4 Scm -1、8.51x10 - 6 Ωcm -2和4.62 X 10 -2 Scm -1、7.22 X 10 - 4 Ωcm -2。此外,这些复合膜具有良好的透明性。当PANI/DBSA- ps复合材料中PANI/DBSA含量为25 wt%时,复合膜的电导率最高(3.28 X 10 -1 Scm -1)。聚苯胺/DBSA-PS复合膜的热稳定性最好,聚苯胺/DBSA-PU复合膜的热稳定性最差。另一方面,当PANI/DBSA含量为10%和20% wt%时,PANI/DBSA- pet复合膜具有最大的弹性。而PANI/DBSA-PU复合膜在含量为5 wt %时弹性最大。PANI/DBSA-PS复合膜的弹性最低。
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