182702

Poly(vinylidene fluoride)

average M_w ~534,000 by GPC, powder

• Synonyme(s) : PVDF
• Formule linéaire : (CH₂CF₂)_n
• Numéro CAS: 24937-79-9
• Numéro MDL: MFCD00084470
• Code UNSPSC : 12162002
• ID de substance PubChem : 24851010
• Nomenclature NACRES : NA.23

Propriétés

• Pression de vapeur: 15 mmHg ( 32 °C)
• Forme: powder
• Poids mol.: average M_w ~534,000 by GPC
• Indice de réfraction: n20/D 1.42
• Température de transition: T_g −38 °C; T_m 171 °C
• Densité: 1.74 g/mL at 25 °C
• Chaîne SMILES: FC(F)=C
• InChI: 1S/C2H2F2/c1-2(3)4/h1H2
• Clé InChI: BQCIDUSAKPWEOX-UHFFFAOYSA-N

Description

Description générale

Poly(vinylidene fluoride) PVDF is a semi crystalline non-centrosymmetric polymer which exhibits piezo-, pyro- and ferroelectric properties. It is a linear polymer that shows permanent electric dipoles perpendicular to the direction of the molecular chain. These dipoles result from the difference in electronegativity between the atoms of hydrogen and fluorine with respect to carbon. Depending on the processing conditions, PVDF exhibits several different crystalline phases (α,β,γ,δ). The β phase of PVDF is the phase that exhibits the best ferroelectric and piezoelectric properties.

Application

Poly(vinylidene fluoride) (PVDF) is used in nanoporous electrodes. It is used to synthesize composites comprising of ultrafine fibers of PVDF embedded with carbon nanotubes. It can be used in sensors, actuators, for energy storage, sphygmomanometers, pressure sensors and nanogenerators, lithium ion batteries. Additionally, it may find application as matrix for PVDF-nanoclay nanocomposites and PVDF acrylic rubber/clay nanocomposite hybrid.

Informations sur la sécurité

• Code de la classe de stockage: 11 - Combustible Solids
• Classe de danger pour l'eau (WGK): WGK 3
• Point d'éclair (°F): Not applicable
• Point d'éclair (°C): Not applicable
• Équipement de protection individuelle: Eyeshields, Gloves, type N95 (US)