On the structure and morphology of polyvinylidene fluoride–nanoclay nanocomposites

Structural and electrical properties of gold nanowires/P(VDF-TrFE) nanocomposites

“…A linear extrapolation of the experimental points until zero crystallinity (solid line) gives a critical Au NWs volume fraction of 35 vol%. The effect of a dispersion of nanoclays on the crystallinity behaviour of PVDF and its copolymer was largely described by Cebe et al (2004) [16] and Dillon et al (2006) [17]. The presence of nano-clays induced a weak decrease of the crystallinity and a shift of the melting peak towards lower temperatures.…”

“…P(VDF-TrFE) is a semi-crystalline thermoplastic polymer with excellent process ability, high mechanical strength, high dielectric permittivity and thermal stability. But its degree of crystallinity was affected by filling it with nanoparticles like carbon nanofiber (CF) [14], carbon nanotubes (CNTs) [15] or nanoclays [16,17]. The mechanical properties are directly linked to the crytallinity ratio.…”

Clay nanocomposites based on poly(vinylidene fluoride-co-hexafluoropropylene): Structure and properties

“…However, martensiticlike transformations of the crystalline phase have been observed only in selected polymer-clay combinations. The most well explored examples of this type are the development of γ phase in Nylon 6 at the expense of the α phase in the neat polymer [12,13] and the evolution of β phase instead of the α form in PVDF [14][15][16][17][18][19][20][21][22][23][24]. The latter has a considerable impact in applications where pyroelectric, piezoelectric, ferroelectric or magnetostrictive response is desirable [25], given that the all-trans configuration of β phase imparts a high dipole moment (7.0 10 -30 Cm /repeat unit) due to the alignment of the polar C-F bonds perpendicular to the polymer axis chain.…”

Gold Nanoparticle Doped PVDF Nanofiber Preparation of Concurrently Harvesting Light and Mechanical Energy

“…In case of electrospinning fiber [24,25,26,27] wavenumber 1275cm -1 (β), 840 cm -1 (β) and 1234 cm -1(ɣ) related absorbance peak is present but in case of casting film no 1275cm -1 wavenumber related peak is present. The asymmetric and symmetric stretching vibrations of the CH 2 group, respectively, at 3016 cm -1 and 2978 cm -1 (Fig.5) are present in both electrospinning fiber and casting film.…”