Graphene/sulfonated polyaniline composite was prepared and dispersed in water to obtain the conductive ink.Scanning electronic microscopy,fourier-transform infrared spectroscopy and raman spectroscopy were used to characterize the morphology and structure of the as-prepared material,and four probe method was used to investigate the conductive property of the ink.The results shown that in the composite,the sulfonated polyaniline nanoparticles were loaded on graphene.The π-π interaction between them significantly improved the dispersion of graphene in water,and thereby a uniform and stable conductive ink was obtained.The presence of sulfonated polyaniline also facilitated the removal of oxygen-containing groups in graphene and thus reduced lattice defects in graphene.When the graphene/sulfonated polyaniline content in the conductive ink was 15% (w%),the conductive ink had good electrical conductivity with the square resistance of 2.48MΩ/□.In addition,the electronic circuit prepared by direct writing method had good uniformity and good tolerance to bending,indicating that this ink held the potential to be applied in the field of flexible electronic circuits.
Zhao Junming, Liu Juan, Guo Bingyi, Pi Junyi, Du Fuying, Cao Shunan
. Study on preparation of graphene/sulfolated polyaniline conductive ink and its property[J]. New Chemical Materials, 2020
, 48(9)
: 72
-75
.
DOI: 10.19817/j.cnki.issn 1006-3536.2020.09.016
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