Study on BaTiO₃/P(VDF-TrFE) 0–3 composites

The effect of processing conditions on the morphology, thermomechanical, dielectric, and piezoelectric properties of P(VDF-TrFE)/BaTiO3 composites

“…Then BaTiO 3 was added slowly to the stirred solution in order to avoid powder sedimentation or agglomeration. The solution was then placed in an ultrasound bath (Sonorex Super, Bandelin GmbH & Co. KG, Germany) for 1 h to further disagglomerate the powder [26,31]. Finally the solution was cast on glass and the solvent was evaporated at room temperature in vacuum for 12 h, and then at 70°C in vacuum for 2 h. The films obtained in this way were then divided in three sets.…”

“…In addition to this, polymer/BaTiO 3 composites are also of great interest for the fabrication of high-relative permittivity materials for, e.g., embedded capacitors [20][21][22][23][24]. For polymer/BaTiO 3 composites the reported absolute values for d 33 are usually between 1 and 30 pC/N [6,8,25,26] (the sign depending on the polarization conditions in the case of piezoelectric polymer matrices), although a d 33 higher than 50 pC/N was reported for a PVDF/BaTiO 3 composite [27].…”

“…For example, although mechanical powder mixing has been sometimes used [27], most of the PVDF and P(VDF-TrFE)-based composites reported in literature were prepared by first dispersing the polymer and ceramics in a solvent. Films were then obtained by solvent casting [28,29], spin coating [30], and/or hot pressing/ compression molding under different conditions [26,31]. Annealing was also sometimes used to improve crystallinity of the polymeric matrix [32].…”

Effect of silane coupling agent on the morphology, structure, and properties of poly(vinylidene fluoride–trifluoroethylene)/BaTiO3 composites

“…Another possible route is the development of nanocomposite materials [4]; both fillers with high permittivity, as e.g. BaTiO 3 [8][9][10][11][12][13], and conducting fillers, as metal nanoparticles and graphite nanosheets, which can form percolative composites [14,15], have been added to PVDF and its copolymers.…”

Designing of Nano Composites of Conducting Polymers for EMI Shielding

“…To raise the dielectric constant of polymers, high-dielectric constant ceramic powders such as BaTiO 3 and PbTiO 3 have been added to the polymers to form nanocomposites [105][106][107][108][109][110]. The electrical properties of polyaniline could be modified by the addition of inorganic fillers [111][112][113][114][115][116].…”