One-step synthesis of polyaniline-silver cryogels

0524698 - ÚMCH 2021 RIV US eng J - Článek v odborném periodiku
Milakin, Konstantin A. - Morávková, Zuzana - Acharya, Udit - Šlouf, Miroslav - Hodan, Jiří - Bober, Patrycja
One-step synthesis of polyaniline-silver cryogels.
Journal of Materials Science. Roč. 55, č. 24 (2020), s. 10427-10434. ISSN 0022-2461. E-ISSN 1573-4803
Grant CEP: GA ČR(CZ) GA18-04669S
Institucionální podpora: RVO:61389013
Klíčová slova: polyaniline-silver composites * cryogels * conductivity
Obor OECD: Composites (including laminates, reinforced plastics, cermets, combined natural and synthetic fibre fabrics
Impakt faktor: 4.220, rok: 2020
Způsob publikování: Omezený přístup
https://link.springer.com/article/10.1007/s10853-020-04719-y

Polyaniline–silver cryogels were prepared by a single-step cryopolymerization with a mixed oxidant consisting of ammonium peroxydisulfate and silver nitrate for in situ incorporation of silver particles. The macroporous structure of the materials and successful introduction of silver microparticles were confirmed by scanning electron microscopy paired with energy-dispersive spectroscopy. Changing of the silver nitrate content in the initial oxidant mixture was shown to be a facile way for controlling silver particles load in the resulting cryogels with a maximum achieved value of 25 wt%. Vibrational spectroscopy showed that the cryogels prepared using higher silver nitrate concentration contained more aniline oligomers which led to the moderate decrease in their conductivity and tensile modulus. Nevertheless, polyaniline–silver cryogels with the highest load of silver had a good conductivity (0.33 S cm–1) and mechanical stability making it a promising material for electrochemical and antibacterial applications.
Trvalý link: http://hdl.handle.net/11104/0309148