TY - JOUR
T1 - Design of Ionic-Liquid-Based Hybrid Polymer Materials with a Magnetoactive and Electroactive Multifunctional Response
AU - Fernandes, Liliana C.
AU - Correia, Daniela M.
AU - Fernández, Eduardo
AU - Tariq, Mohammad
AU - Esperança, José M. S. S.
AU - Lanceros-Méndez, Senentxu
N1 - UID/FIS/04650/2020
UIDB/50006/2020
PTDC/BTM-MAT/28237/2017
PTDC/EMD-EMD/28159/2017
SFRH/BD/145345/2019 (LCF)
SFRH/BPD/121526/2016 (DMC)
(ERFD): PID2019-106099RB-C43/AEI/10.13039/501100011033;
ELKARTEK, HAZITEK, and PIBA (PIBA-2018-06)
Sem PDF conforme despacho.
PY - 2020/9/16
Y1 - 2020/9/16
N2 - Multifunctional materials with sensor and actuator capabilities play an increasing role in modern technology. In this scope, hybrid materials with magnetic sensing and an electromechanical actuator response based on magnetic ionic liquids (MILs) and the polymer poly(vinylidene fluoride) (PVDF) have been developed. MILs comprising different cation alkyl chain lengths [Cnmim]+ and sharing the same anion [FeCl4]- were incorporated at 20 wt % into the PVDF matrix and the morphological, physical, chemical, and functional properties of the materials were evaluated. An increasing IL alkyl chain length leads to the formation of a porous structure, together with an increase in the electroactive PVDF β-phase content of the polymer and a decrease in the crystallinity degree and thermal stability. The magnetic susceptibility of the [Cnmim][FeCl4]/PVDF films reveals a paramagnetic behavior. The multifunctional response is characterized by a magnetoionic response that decreases with increasing IL alkyl chain length, the highest magnetoionic coefficient (1.06 ± 0.015 V cm-1 Oe-1) being observed for [C2mim][FeCl4]/PVDF. The electromechanical actuator response is characterized by a highest displacement of 1.1 mm for the [C4mim][FeCl4]/PVDF film by applying a voltage of 4 V at a frequency of 100 mHz. Further, their solution processing makes these multiresponsive materials compatible with additive manufacturing technologies.
AB - Multifunctional materials with sensor and actuator capabilities play an increasing role in modern technology. In this scope, hybrid materials with magnetic sensing and an electromechanical actuator response based on magnetic ionic liquids (MILs) and the polymer poly(vinylidene fluoride) (PVDF) have been developed. MILs comprising different cation alkyl chain lengths [Cnmim]+ and sharing the same anion [FeCl4]- were incorporated at 20 wt % into the PVDF matrix and the morphological, physical, chemical, and functional properties of the materials were evaluated. An increasing IL alkyl chain length leads to the formation of a porous structure, together with an increase in the electroactive PVDF β-phase content of the polymer and a decrease in the crystallinity degree and thermal stability. The magnetic susceptibility of the [Cnmim][FeCl4]/PVDF films reveals a paramagnetic behavior. The multifunctional response is characterized by a magnetoionic response that decreases with increasing IL alkyl chain length, the highest magnetoionic coefficient (1.06 ± 0.015 V cm-1 Oe-1) being observed for [C2mim][FeCl4]/PVDF. The electromechanical actuator response is characterized by a highest displacement of 1.1 mm for the [C4mim][FeCl4]/PVDF film by applying a voltage of 4 V at a frequency of 100 mHz. Further, their solution processing makes these multiresponsive materials compatible with additive manufacturing technologies.
KW - composites
KW - electroactive polymers
KW - hybrid materials
KW - magnetic ionic liquids
KW - PVDF
UR - http://www.scopus.com/inward/record.url?scp=85091191506&partnerID=8YFLogxK
U2 - 10.1021/acsami.0c10746
DO - 10.1021/acsami.0c10746
M3 - Article
C2 - 32806893
AN - SCOPUS:85091191506
VL - 12
SP - 42089
EP - 42098
JO - Acs Applied Materials & Interfaces
JF - Acs Applied Materials & Interfaces
SN - 1944-8244
IS - 37
ER -