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Home  > Raw materials & technologies  > Applications  > Polyaniline-thiacalix[4]arene metallopolym...

Tuesday, 20 October 2020
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Raw materials & technologies, Applications

Polyaniline-thiacalix[4]arene metallopolymer – self-doped, and externally doped conductive polymers

Wednesday, 23 September 2020

A new article deals with the conductivity increment of polyaniline (PANI) through the synthesis of redox polymer and intrinsically conductive polymers (ICP) with thiacalix[4]arene (TCA) segment combination.

During the study, also the protection against bacterial infection was investigated. Image source: Seybert - stock.adobe.com (symbol image).

During the study, also the protection against bacterial infection was investigated. Image source: Seybert - stock.adobe.com (symbol image).

A redox polymer was prepared through the copolymerisation of PANI and TCA to give metallopolymers of PANI-TCA. Two diverse ICPs were also synthesized; the first was prepared through emulsion polymerisation of PANI in the presence of sulfonated TCA as an external dopant named doped PANI-TCA and the second was prepared by the covalently bonding of TCA to PANI chains to give self-doped PANI-TCA.

The polymerisation condition was carefully designed to give nanocomposites for each conductive polymer which was confirmed by XRD, SEM, AFM and TEM measurements. The conductivity of the nanocomposites was compared and their valuable anticorrosion property was studied through Tafel plots.

Probability to be used as implants

The antioxidant study of the conductive polymers through DPPH assay revealed an inhibition up to circa 80 % for the self-doped PANI-TCA. Protection against bacterial infection was also investigated for the nanocompsites through the Kirby-Bauer technique to reveal their probability to be used as implants.

The study has been published in Progress in Organic Coatings, Volume 146, September 2020.

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