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Synthesis and Characterization of Polyaniline

Deng, Chengming
http://orcid.org/0000-0001-5152-4769
http://rave.ohiolink.edu/etdc/view?acc_num=ucin1603712965215724

Abstract Details

2020, MS, University of Cincinnati, Engineering and Applied Science: Materials Science.
The sodium toluene sulfonic acid (TSA) doped polyaniline (PANI) was synthesized using the chemical oxidation polymerization by a former group member Mr. Stephen Hall. The polyaniline samples were made under different mixing and reaction conditions. The research is focused on investigating the effects of mixing and reaction conditions of polyaniline on thermal, electrochemical properties. The polyaniline-polyimide films were prepared and tested only by Cyclic Voltammetry (CV) to analysis the electrochemical behavior of PANI-PI film. The chemical structure of polyaniline was analyzed by the Fourier-Transform infrared (FTIR) spectroscopy. The polyaniline structure was determined by three identical key absorbance bands. Thermal gravimetric analysis (TGA) was used in the decomposition behaviors analysis of polyimide samples, the activation energy was calculated from the TGA results. Differential Scanning Calorimetry (DSC) was performed and the glass transition temperature, melting point as well as the crystallization temperature were obtained. The crystallinity of polyaniline sample was also calculated. Ultraviolet–visible spectroscopy (UV-Vis) was introduced and two distinct absorption bands were observed. The band gap of polyaniline sample was determined using the Tauc plot. The Cyclic Voltammetry (CV) was used in the electrochemical analysis of PANI-PI film, the diffusion coefficients and the specific capacitance of the film was obtained. It was found that the polyaniline samples mixing with the dopant at low temperature for longer time have higher crystallinity. Reacting with the oxidant at low reaction temperature for longer time also has the same effect. Polyaniline sample with higher crystallinity will have higher activation energy and lower band gap. In the CV test of PANI-PI film, the film has lower specific capacitance than neat PANI.
Jude Iroh, Ph.D. (Committee Chair)
Je-Hyeong Bahk, Ph.D. (Committee Member)
Jonathan Nickels, Ph.D. (Committee Member)
93 p.
Materials Science
polyaniline; chemical oxidation polymerization; thermal; electrochemical

Recommended Citations

Citations

  • Deng, C. (2020). Synthesis and Characterization of Polyaniline [Master's thesis, University of Cincinnati]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1603712965215724

    APA Style (7th edition)

  • Deng, Chengming. Synthesis and Characterization of Polyaniline. 2020. University of Cincinnati, Master's thesis. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=ucin1603712965215724.

    MLA Style (8th edition)

  • Deng, Chengming. "Synthesis and Characterization of Polyaniline." Master's thesis, University of Cincinnati, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1603712965215724

    Chicago Manual of Style (17th edition)

ucin1603712965215724
909
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This open access ETD is published by University of Cincinnati and OhioLINK.