Chemical oxidative polymerization and in situ spectroelectrochemical studies of a sulfonated aniline derivative by UV-visible spectroscopy

C. Sivakumar, T. Vasudevan, A. Gopalan, Ten Chin Wen

研究成果: Article同行評審

20 引文 斯高帕斯(Scopus)

摘要

The chemical oxidative polymerization of diphenylamine-4-sulfonate (DPASA) was carried out in aqueous and 0.5 M H2SO4 solutions using potassium peroxodisulfate (PDS) as an oxidant. The course of polymerization was followed by UV-visible spectroscopy. The absorbances corresponding to the intermediate and the polymer were followed for different concentrations of DPASA and PDS and at different times of polymerization. The medium was found to be homogeneous and became green colored. The rate of polymerization (Rp) was determined for various conditions. The observed dependences of DPASA and PDS on Rp were used to deduce a rate equation for the polymerization of DPASA. The rate constant for the formation of poly-(diphenylamine-4-sulfonic acid), PDPASA, was estimated. Spectroelectrochemical studies were carried out using indium tin oxide as the working electrode to follow the course of polymerization under electro-oxidative conditions. The polymer, PDPASA, was isolated from the reaction medium and characterized by 1H NMR, FTIR spectroscopy, and thermogravimetric analysis.

原文English
頁(從 - 到)40-51
頁數12
期刊Industrial and Engineering Chemistry Research
40
發行號1
DOIs
出版狀態Published - 2001 1月 1

All Science Journal Classification (ASJC) codes

  • 一般化學
  • 一般化學工程
  • 工業與製造工程

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