TY - JOUR
T1 - Ionic-Liquid-Based Printable Materials for Thermochromic and Thermoresistive Applications
AU - Fernandes, Liliana C.
AU - Correia, Daniela M.
AU - García-Astrain, Clara
AU - Pereira, Nelson
AU - Tariq, Mohammad
AU - Esperança, José M. S. S.
AU - Lanceros-Méndez, Senentxu
N1 - info:eu-repo/grantAgreement/FCT/5876/147414/PT#
info:eu-repo/grantAgreement/FCT/5876/147218/PT#
POCI-01-0145-FEDER-007265.
project PTDC/EEI-SII/5582/2014 with the reference project POCI-01-0145-FEDER-006941.
LungChek ENMed/0049/2016.
SFRH/BPD/121526/2016.
SFRH/BD/131729/2017.
IF/00355/2012.
funding by the Spanish Ministry of Economy and Competitiveness (MINECO) through the project MAT2016-76039-C4-3-R (AEI/FEDER, UE) and from the Basque Government Industry and Education Departments under the ELKARTEK, HAZITEK, and PIBA (PIBA-2018-06) programs, respectively.
PY - 2019/6/5
Y1 - 2019/6/5
N2 - Smart materials exhibiting thermochromic and themoresistive properties based on the electroactive polymer poly(vinylidene fluoride) (PVDF) and the ionic liquid (IL) bis(1-butyl-3-methylimidazolium) tetrachloronickelate ([Bmim]2[NiCl4]) have been developed with different contents of [Bmim]2[NiCl4] (10, 20, and 40 wt %) within the polymer matrix. The morphology of the composites is studied, and the thermochromic and thermoresistive properties are evaluated. Independently of the IL content, the PVDF/[Bmim]2[NiCl4] composites present a porous morphology and thermochromic response, revealed by the color change of the composites from transparent to dark blue, attributed to the tetrahedral complex NiCl42- formed after a dehydration process. Further, the electrical conductivity increases with increasing IL content and decreases with increasing temperature. It is also shown that the incorporation of the IL into the PVDF matrix leads to an increase in the electroactive β phase and a decrease in the degree of crystallinity and thermal stability with increasing [Bmim]2[NiCl4] content. The printability and applicability of the developed materials as sensors are also demonstrated.
AB - Smart materials exhibiting thermochromic and themoresistive properties based on the electroactive polymer poly(vinylidene fluoride) (PVDF) and the ionic liquid (IL) bis(1-butyl-3-methylimidazolium) tetrachloronickelate ([Bmim]2[NiCl4]) have been developed with different contents of [Bmim]2[NiCl4] (10, 20, and 40 wt %) within the polymer matrix. The morphology of the composites is studied, and the thermochromic and thermoresistive properties are evaluated. Independently of the IL content, the PVDF/[Bmim]2[NiCl4] composites present a porous morphology and thermochromic response, revealed by the color change of the composites from transparent to dark blue, attributed to the tetrahedral complex NiCl42- formed after a dehydration process. Further, the electrical conductivity increases with increasing IL content and decreases with increasing temperature. It is also shown that the incorporation of the IL into the PVDF matrix leads to an increase in the electroactive β phase and a decrease in the degree of crystallinity and thermal stability with increasing [Bmim]2[NiCl4] content. The printability and applicability of the developed materials as sensors are also demonstrated.
KW - electroactive materials
KW - ionic liquids
KW - PVDF
KW - smart materials
KW - thermochromic materials
KW - [Bmim][NiCl]
UR - http://www.scopus.com/inward/record.url?scp=85066854556&partnerID=8YFLogxK
U2 - 10.1021/acsami.9b00645
DO - 10.1021/acsami.9b00645
M3 - Article
C2 - 31074605
AN - SCOPUS:85066854556
SN - 1944-8244
VL - 11
SP - 20316
EP - 20324
JO - ACS Applied Materials & Interfaces
JF - ACS Applied Materials & Interfaces
IS - 22
ER -