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Preparation and characterization of polyaniline coated microspheres for potential application in anisotropic conductive film

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Abstract

Monodispersed polyaniline-coated (PANi) microspheres with a mean diameter of 5.174 μm and a 3.53% coefficient of variation were successfully prepared through an in-situ chemical oxidation polymerization of aniline on the surface of high-crosslinked polystyrene-divinylbenzene (PSDVB) particles with the mass ratio of 1: 0.12 between PSDVB particles and aniline. The microspheres were characterized by the scanning electron microscopy (SEM), FTIR and elemental analysis. A very thin layer of polyaniline, about 10.5% in weight, was found to evenly cover on the PSDVB, The microspheres were demonstrated to be thermal stable below 450 °C by thermogravimetric analysis (TGA) measurements and have a bulk conductivity of 6.67 × 10-3 S.cm-1 by AC impedance method. The good thermal stability suggested that PANi/PSDVB microspheres could be a promising material to replace the conventional metallic anisotropic conductive film (ACF) particles if the conductivity could be further improved in the future.

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Acknowledgments

This work is supported by the National Natural Science Foundation of China (20974075, 50773049), the Program of Innovative Research Team of Soochow University and the Priority Academic Program Development of Jiangsu Higher Education Institutions.

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Authors and Affiliations

  1. Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application, Department of Polymer Science and Engineering, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, 215123, People’s Republic of China

    Lisha Wang, Jianjia Xu, Yun Chen, Si Cheng & Li-Juan Fan

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  1. Lisha Wang
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  2. Jianjia Xu
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  3. Yun Chen
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  4. Si Cheng
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  5. Li-Juan Fan
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Correspondence to Li-Juan Fan.

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Wang, L., Xu, J., Chen, Y. et al. Preparation and characterization of polyaniline coated microspheres for potential application in anisotropic conductive film. J Polym Res 18, 2169–2174 (2011). https://doi.org/10.1007/s10965-011-9627-1

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  • DOI: https://doi.org/10.1007/s10965-011-9627-1

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