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Synthesis of Core-Shell Composite of Conductive Polymeric Materials onto Silica Using Supercritical Carbon Dioxide

Published online by Cambridge University Press:  13 April 2020

Ssu-Hao Huang ,
Pei-Hua Chen ,
Yan-Ping Chen  and
Muoi Tang
Ssu-Hao Huang
Affiliation:
Department of Chemical Engineering, National Taiwan University, Taipei, Taiwan
Pei-Hua Chen
Affiliation:
Department of Orthopedics, Taipei Medical University, Shuang Ho Hospital, Taipei, Taiwan
Yan-Ping Chen
Affiliation:
Department of Chemical Engineering, National Taiwan University, Taipei, Taiwan
Muoi Tang*
Affiliation:
Department of Chemical and Materials Engineering, Chinese Culture, University, Taipei, Taiwan
*
*(Email: [email protected])
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Abstract

The polymerization of 3,4-ethylenedioxythiophene (EDOT) onto nanosilica (SiO2) was synthesized in this study by using supercritical carbon dioxide (SCCO2). With the addition of dopants of p-toluenesulfonic acid (p-TSA) or decylbenzene sulfonic acid (DBSA), the PEDOT/SiO2 composite became conductive. The product was characterized by FTIR spectroscopy and the core-shell structure was confirmed through the TEM images. The electrical properties were analyzed by UV-vis absorbance and four-point probe measurement. DBSA is shown as the better dopants with the molar ratio (DBSA/EDOT) of 0.2 at the reaction time of 48 hours. The maximum coating percentage is 63 wt% under the optimal operation conditions at 40oC and 280 bar. The conductivity is tuned up to 6.6×10-2 S/cm after the coating process.

Keywords

chemical synthesiscore/shellcompositepolymerization
Type
Articles
Information
MRS Advances , Volume 5 , Issue 40-41: Nanoscale and Quantum Materials , 2020 , pp. 2121 - 2127
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Copyright
Copyright © Materials Research Society 2020

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References

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