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Tuning of hydrophobicity of conducting films cast from polyaniline-phytic acid-poly(N-vinylpyrrolidone) dispersions
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SYSNO ASEP 0549774 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Tuning of hydrophobicity of conducting films cast from polyaniline-phytic acid-poly(N-vinylpyrrolidone) dispersions Tvůrce(i) Milakin, Konstantin A. (UMCH-V) RID
Acharya, Udit (UMCH-V) RID, ORCID
Minisy, Islam M. (UMCH-V) RID, ORCID
Tumacder, Doebner Von (UMCH-V) ORCID, RID
Morávková, Zuzana (UMCH-V) RID, ORCID
Taboubi, Oumayma (UMCH-V) RID, ORCID
Syrový, T. (CZ)
Syrová, L. (CZ)
Pfleger, Jiří (UMCH-V) RID
Bober, Patrycja (UMCH-V) RID, ORCID, SAIČíslo článku 106666 Zdroj.dok. Progress in Organic Coatings. - : Elsevier - ISSN 0300-9440
Roč. 163, February (2022)Poč.str. 9 s. Jazyk dok. eng - angličtina Země vyd. NL - Nizozemsko Klíč. slova polyaniline ; phytic acid ; colloidal dispersion Vědní obor RIV CD - Makromolekulární chemie Obor OECD Polymer science CEP GA21-01401S GA ČR - Grantová agentura ČR LTAUSA19066 GA MŠMT - Ministerstvo školství, mládeže a tělovýchovy Výzkumná infrastruktura CEMNAT II - 90103 - Univerzita Pardubice Způsob publikování Omezený přístup Institucionální podpora UMCH-V - RVO:61389013 UT WOS 000736592300002 EID SCOPUS 85121272645 DOI 10.1016/j.porgcoat.2021.106666 Anotace Colloidal dispersions of polyaniline (PANI) doped by phytic acid (PA) and stabilized with poly(N-vinylpyrrolidone) (PVP) were prepared by oxidative polymerization of aniline and compared to the dispersions prepared under similar conditions in the absence of phytic acid. UV–vis and Raman spectroscopies confirmed the formation of protonated PANI in all the cases. According to dynamic light scattering, the dispersions prepared in the presence of PA had a bigger average particle size (⁓360 nm) compared to the PANI-HCl-PVP dispersions (⁓300 nm). The long-term stability of all colloids was confirmed for up to 530 days. The prepared dispersions were used for the film deposition by spiral bar technique resulting in transparent and uniform coatings, which consisted of spherical particles (110–200 nm). The highest conductivity values of 5 × 10−3 and 7 × 10−5 S cm−1 for PANI-HCl-PVP and PANI-PA-PVP, respectively, were achieved at 1 wt% of PVP. At 1 wt% of PVP, PANI-PA-PVP showed hydrophobic properties (θ=102°), which decreased with increasing PVP content, while PANI-HCl-PVP had hydrophilic properties (θ=10°) decreasing with increasing PVP fraction. Cyclic voltammetry of drop-cast films showed that PANI-PA-PVP had significantly higher areal capacitance retention (97%) compared to PANI-HCl-PVP (61%). Such conducting coatings with tunable surface characteristics can be useful for electrochemical applications. Pracoviště Ústav makromolekulární chemie Kontakt Eva Čechová, cechova@imc.cas.cz ; Tel.: 296 809 358 Rok sběru 2023 Elektronická adresa https://www.sciencedirect.com/science/article/pii/S0300944021005373
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