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Effects of interactions among polyaniline, dodecylbenzylsulfonic acid and silica on the morphology and properties of their sol–gel hybrids

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Abstract

In this work, the effects of interactions among polyaniline (PAn), dodecylbenzylsulfonic acid (DBSA) and silica on the morphology and properties of their sol–gel hybrids are investigated. DBSA acts as dopant for PAn and an efficient catalyst for the formation of SiO2 network. Also, DBSA promotes the dissolution of PAn in organic solvent for preparing uniform hybrids. The interaction between DBSA and PAn components raises conductivities of the DBSA-doped PAn/SiO2 (d-PAn/SiO2) hybrids. Moreover, the hydrogen bonding interaction between d-PAn and SiO2 precursor (silicic acid) leads to a less degree of three-dimensional network structure of the SiO2 component in a hybrid with higher d-PAn content. In addition, because of the interactions among DBSA, PAn, and SiO2, the conductive d-PAn-rich phase distributes uniformly in the hybrids. Besides, the d-PAn/SiO2 hybrid with higher SiO2 content exhibits lower conductivity, higher thermal resistance and more significant blue-shift of its polaron band.

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Acknowledgement

The financial support of this work by the National Science Council of ROC is gratefully acknowledged.

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Authors and Affiliations

  1. Department of Cosmetic Science, Vanung University, Chung-Li, 32061, Taiwan, Republic of China

    Chee-Chan Wang

  2. Department of Chemical and Materials Engineering, Vanung University, Chung-Li, 32061, Taiwan, Republic of China

    Shung-Jim Yang & Hsun-Tsing Lee

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  1. Chee-Chan Wang
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  2. Shung-Jim Yang
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Correspondence to Chee-Chan Wang.

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Wang, CC., Yang, SJ. & Lee, HT. Effects of interactions among polyaniline, dodecylbenzylsulfonic acid and silica on the morphology and properties of their sol–gel hybrids. J Polym Res 16, 99–108 (2009). https://doi.org/10.1007/s10965-008-9207-1

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  • DOI: https://doi.org/10.1007/s10965-008-9207-1

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