TY - JOUR
T1 - Effect of ionic liquid anion and cation on the physico-chemical properties of poly(vinylidene fluoride)/ionic liquid blends
AU - Mejri, R.
AU - Dias, J. C.
AU - Lopes, A. C.
AU - Bebes Hentati, S.
AU - Silva, M. M.
AU - Botelho, G.
AU - Mão De Ferro, A.
AU - Esperança, J. M S S
AU - Maceiras, A.
AU - Laza, J. M.
AU - Vilas, J. L.
AU - León, L. M.
AU - Lanceros-Mendez, S.
PY - 2015/8/23
Y1 - 2015/8/23
N2 - Poly(vinylidene fluoride), PVDF, has been blended with different ionic liquids (IL) in order to evaluate the effect of the different IL anions and cations on the electroactive β-phase, thermal, mechanical and electrical properties of the polymer blend. [C2MIM][Cl], [C6MIM][Cl], [C10MIM][Cl], [C2MIM][NTf2], [C6MIM][NTf2], [C10MIM][NTf2] have been selected and were introduced in the polymer at a weight percentage of 40 wt%. It was found that the incorporation of ILs into the PVDF matrix leads to an increase of the β-phase content due to the strong electrostatic interactions between the dipolar moments of PVDF and the ILs. Further, the incorporation of ILs into PVDF strongly decreases the elastic modulus and increases the electrical conductivity of the blend with respect to the pure polymer matrix, all these effects being accompanied by a modification of the crystallization kinetics, as indicated by the modified spherulitic microstructure. Thus, novel PVDF/IL blends films with high transparency, excellent antistatic properties, and highly polar crystal form fraction were successfully achieved.
AB - Poly(vinylidene fluoride), PVDF, has been blended with different ionic liquids (IL) in order to evaluate the effect of the different IL anions and cations on the electroactive β-phase, thermal, mechanical and electrical properties of the polymer blend. [C2MIM][Cl], [C6MIM][Cl], [C10MIM][Cl], [C2MIM][NTf2], [C6MIM][NTf2], [C10MIM][NTf2] have been selected and were introduced in the polymer at a weight percentage of 40 wt%. It was found that the incorporation of ILs into the PVDF matrix leads to an increase of the β-phase content due to the strong electrostatic interactions between the dipolar moments of PVDF and the ILs. Further, the incorporation of ILs into PVDF strongly decreases the elastic modulus and increases the electrical conductivity of the blend with respect to the pure polymer matrix, all these effects being accompanied by a modification of the crystallization kinetics, as indicated by the modified spherulitic microstructure. Thus, novel PVDF/IL blends films with high transparency, excellent antistatic properties, and highly polar crystal form fraction were successfully achieved.
KW - Electroactive polymers
KW - Ionic liquids
KW - Poly(vinylidene fluoride)
KW - Polymer composites
UR - http://www.scopus.com/inward/record.url?scp=84939793082&partnerID=8YFLogxK
U2 - 10.1016/j.eurpolymj.2015.07.058
DO - 10.1016/j.eurpolymj.2015.07.058
M3 - Article
AN - SCOPUS:84939793082
SN - 0014-3057
VL - 71
SP - 304
EP - 313
JO - European Polymer Journal
JF - European Polymer Journal
ER -