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Publikācija: Polypyrrole Coatings on Gelatin Fiber Scaffolds: Material and Electrochemical Characterizations in Organic and Aqueous Electrolyte

Publication Type Scientific article indexed in SCOPUS or WOS database
Funding for basic activity Research project
Defending: ,
Publication language English (en)
Title in original language Polypyrrole Coatings on Gelatin Fiber Scaffolds: Material and Electrochemical Characterizations in Organic and Aqueous Electrolyte
Field of research 2. Engineering and technology
Sub-field of research 2.5 Materials engineering
Authors Madis Harjo
Kaur Leemets
Mahdi Safaei Khorram
Rando Saar
Martin Järvekülg
Tarmo Tamm
Rudolf Kiefer
Keywords Glycose-gelatin conductive fiber scaffold, PPy chemically, LiTFSI, Aqueous and propylene carbonate solvent, Specific capacitance
Abstract Polypyrrole (PPy) was chemically deposited on glycose-crosslinked gelatin fiber scaffold (FS) by simple dip coating technique, resulting in conductive fiber scaffolds (CFS). The CFS samples were comparatively studied in aqueous and propylene carbonate solutions of equal concentrations of lithium bis(trifluoromethanesulfonyl)imide (LiTFSI) electrolyte. Our aim in this work was to characterize the mechanical and electrochemical properties of the CFS samples. The new CFS material was characterized by scanning electron microscopy (SEM) and FTIR measurements confirming chemical oxidized PPy deposits on FS. The electrochemical measurements applying cyclic voltammetric, chronoamperometric and chronopotentiometric measurements showed that while diffusion coefficients for both solvents were in similar range, the exchanged charge was nearly doubled in aqueous solutions. The specific capacitance of the CFS had the highest value in aqueous electrolyte reaching 175 F g−1, which suggests that in addition to smart tissue engineering, this novel CFS material could also find application in energy storage.
DOI: 10.1016/j.synthmet.2017.07.014
Hyperlink: http://www.sciencedirect.com/science/article/pii/S0379677917302035?via%3Dihub 
Reference Harjo, M., Leemets, K., Khorram, M., Saar, R., Järvekülg, M., Tamm, T., Kiefer, R. Polypyrrole Coatings on Gelatin Fiber Scaffolds: Material and Electrochemical Characterizations in Organic and Aqueous Electrolyte. Synthetic Metals, 2017, Vol.232, pp.25-30. ISSN 0379-6779. Available from: doi:10.1016/j.synthmet.2017.07.014
Additional information Citation count:
ID 26743