Tuning of hydrophobicity of conducting films cast from polyaniline-phytic acid-poly(N-vinylpyrrolidone) dispersions
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389013%3A_____%2F22%3A00549774" target="_blank" >RIV/61389013:_____/22:00549774 - isvavai.cz</a>
Alternative codes found
RIV/00216275:25310/22:39920124 RIV/00216208:11310/22:10458364 RIV/00216208:11320/22:10458364
Result on the web
<a href="https://www.sciencedirect.com/science/article/pii/S0300944021005373" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0300944021005373</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.porgcoat.2021.106666" target="_blank" >10.1016/j.porgcoat.2021.106666</a>
Alternative languages
Result language
angličtina
Original language name
Tuning of hydrophobicity of conducting films cast from polyaniline-phytic acid-poly(N-vinylpyrrolidone) dispersions
Original language description
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.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10404 - Polymer science
Result continuities
Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2022
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Progress in Organic Coatings
ISSN
0300-9440
e-ISSN
1873-331X
Volume of the periodical
163
Issue of the periodical within the volume
February
Country of publishing house
NL - THE KINGDOM OF THE NETHERLANDS
Number of pages
9
Pages from-to
106666
UT code for WoS article
000736592300002
EID of the result in the Scopus database
2-s2.0-85121272645