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182702

Sigma-Aldrich

Poly(vinylidene fluoride)

average Mw ~534,000 by GPC, powder

Sinonimo/i:

PVDF

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About This Item

Formula condensata:
(CH2CF2)n
Numero CAS:
24937-79-9
Numero MDL:
MFCD00084470
Codice UNSPSC:
12162002
ID PubChem:
24851010
NACRES:
NA.23

Tensione di vapore

15 mmHg ( 32 °C)

Forma fisica

powder

PM

average Mw ~534,000 by GPC

Indice di rifrazione

n20/D 1.42

Temp. transizione

Tg −38 °C
Tm 171 °C

Densità

1.74 g/mL at 25 °C

Stringa SMILE

FC(F)=C

InChI

1S/C2H2F2/c1-2(3)4/h1H2
BQCIDUSAKPWEOX-UHFFFAOYSA-N

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Categorie correlate

Descrizione generale

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.

Applicazioni

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.

Codice della classe di stoccaggio

11 - Combustible Solids

Classe di pericolosità dell'acqua (WGK)

WGK 3

Punto d’infiammabilità (°F)

Not applicable

Punto d’infiammabilità (°C)

Not applicable

Dispositivi di protezione individuale

Eyeshields, Gloves, type N95 (US)

Certificati d'analisi (COA)

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Hot Plate Annealing at a Low Temperature of a Thin Ferroelectric P(VDF-TrFE) Film with an Improved Crystalline Structure for Sensors and Actuators.
Sensors (Basel, Switzerland), 14(10), 19115-19127 null
Wenzhong Ma et al.
Membranes, 4(2), 243-256 (2014-06-25)
The crystallization behaviors of two copolymers of PVDF were studied, and the effect of copolymerized chains on the crystallization behavior was investigated. The results indicated that both copolymers had a lowered crystallization temperature and crystallinity. The crystallization rate was improved
Chi Yan Lai et al.
Membranes, 4(1), 55-78 (2014-06-25)
Current commercial polymer membranes have shown high performance and durability in water treatment, converting poor quality waters to higher quality suitable for drinking, agriculture and recycling. However, to extend the treatment into more challenging water sources containing abrasive particles, micro
Shu-Hua Wang et al.
Nanoscale research letters, 9(1), 522-522 (2014-10-08)
Poly(vinylidene fluoride) (PVDF) ultrafine fibers with different proportions of multi-walled carbon nanotube (MWCNT) embedded have been fabricated using a modified electrospinning device with a rotating collector. With the increasing of MWCNT content, the β phase was noticeable enhanced, and the
Thermal-to-electric energy conversion of a nanoporous carbon
Yu Q, et al
Journal of Power Sources, 183(1), 403-405 (2008)
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