Isothermal crystallization of poly(vinylidene fluoride) blended with the ionic liquid [Emim]2[Co(SCN)4]: Simultaneous analysis of crystalline phases by infrared spectroscopy and differential scanning calorimetry
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F24%3A10491350" target="_blank" >RIV/00216208:11320/24:10491350 - isvavai.cz</a>
Result on the web
<a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=pViyboc5bK" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=pViyboc5bK</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.polymer.2024.126816" target="_blank" >10.1016/j.polymer.2024.126816</a>
Alternative languages
Result language
angličtina
Original language name
Isothermal crystallization of poly(vinylidene fluoride) blended with the ionic liquid [Emim]2[Co(SCN)4]: Simultaneous analysis of crystalline phases by infrared spectroscopy and differential scanning calorimetry
Original language description
The combination of poly (vinylidene fluoride) (PVDF) with ionic liquids (ILs) is increasingly being studied for the development of smart materials. Together with the functional response provided by the IL, its incorporation into PVDF allows to nucleate specific electroactive phases of the polymer, depending on the processing conditions. Thus, the isothermal crystallization of PVDF incorporating different contents of the magnetic ionic liquid bis(1ethyl-3-methylimidazolium) tetrathiocyanatocobaltate ([Emim]2 [Co(SCN)4]) is reported in this work. Morphological properties of the films were obtained by field emission scanning electronic microscopy (FESEM), and particularly, for the higher contents of IL, segregation was observed through artifacts present on the film surface. This fact has been further confirmed by energy-dispersive x-ray spectroscopy (EDX). The growth of the crystalline phases of PVDF during isothermal crystallization at different temperatures has been analyzed by Fourier transform infrared (FTIR) spectroscopy. Although alpha, beta and gamma crystalline phases were present in all samples, their relative percentages varied greatly with the amount of IL present, demonstrating that [Emim]2 [Co(SCN)4] is a strong inductor of the electroactive (EA) phases of PVDF. By evaluating both FTIR and DSC data, this effect has been ascribed to the higher melting temperatures of the EA structures whose formation is favored at higher crystallization temperatures. The melting temperature (Tm) of the beta phase is higher than that of the alpha phase, whereas Tm for the gamma phase is higher than for alpha and beta phases. Thus, together with the specific functional properties provided by the IL, such as magnetic response and ionic conductivity, the addition of [Emim]2 [Co(SCN)4] strongly influences PVDF's crystallization kinetics, proving to be a simple and very effective way to nucleate specific phases of PVDF, according also to the specific processing conditions.
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
10301 - Atomic, molecular and chemical physics (physics of atoms and molecules including collision, interaction with radiation, magnetic resonances, Mössbauer effect)
Result continuities
Project
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Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2024
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Polymer
ISSN
0032-3861
e-ISSN
1873-2291
Volume of the periodical
296
Issue of the periodical within the volume
březen
Country of publishing house
GB - UNITED KINGDOM
Number of pages
11
Pages from-to
126816
UT code for WoS article
001205848600001
EID of the result in the Scopus database
2-s2.0-85186121391