The molecular weight of this material is not evaluated on a lot to lot basis. However, historical data indicates and average molecular weight of approximately 534,000 grams per mole.
182702
Poly(vinylidene fluoride)
powder
Sinónimos:
PVDF
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Fórmula lineal:
(CH2CF2)n
Número CAS:
NACRES:
NA.23
PubChem Substance ID:
UNSPSC Code:
12162002
MDL number:
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Servicio técnico
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Permítanos ayudarlevapor pressure
15 mmHg ( 32 °C)
Quality Segment
form
powder
refractive index
n20/D 1.42
transition temp
Tg −38 °C, Tm 171 °C
density
1.74 g/mL at 25 °C
SMILES string
FC(F)=C
InChI
1S/C2H2F2/c1-2(3)4/h1H2
InChI key
BQCIDUSAKPWEOX-UHFFFAOYSA-N
General description
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.[1][2][3]
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.[1] It can be used in sensors, actuators, for energy storage, sphygmomanometers, pressure sensors and nanogenerators,[3] lithium ion batteries.[4] Additionally, it may find application as matrix for PVDF-nanoclay nanocomposites[5] and PVDF acrylic rubber/clay nanocomposite hybrid.[6]
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Este artículo | |||
|---|---|---|---|
| refractive index n20/D 1.42 | refractive index n20/D 1.42 | refractive index n20/D 1.42 | refractive index n20/D 1.41 |
| form powder | form beads or pellets | form pellets | form pellets |
| density 1.74 g/mL at 25 °C | density 1.78 g/mL at 25 °C | density 1.78 g/mL at 25 °C | density 1.77 g/mL at 25 °C |
| transition temp Tg −38 °C, Tm 171 °C | transition temp brittleness temperature -62 °C (ASTM D 746), Tm 155-165 °C | transition temp brittleness temperature -62 °C (ASTM D 746), Tm 166-170 °C (ASTM D 3418) | transition temp brittleness temperature -62 °C (ASTM 2800), Tm 140-145 °C (ASTM D 3418) |
| vapor pressure 15 mmHg ( 32 °C) | vapor pressure 15 mmHg ( 32 °C) | vapor pressure 15 mmHg ( 32 °C) | vapor pressure - |
| Quality Level 100 | Quality Level 100 | Quality Level 100 | Quality Level 100 |
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Clase de almacenamiento
11 - Combustible Solids
flash_point_f
Not applicable
flash_point_c
Not applicable
ppe
Eyeshields, Gloves, type N95 (US)
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what is the average mass of PVDF cas .24937-79-9 Cat. 182702
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How can I determine the shelf life / expiration / retest date of this product?
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If this product has an expiration or retest date, it will be shown on the Certificate of Analysis (COA, CofA). If there is no retest or expiration date listed on the product's COA, we do not have suitable stability data to determine a shelf life. For these products, the only date on the COA will be the release date; a retest, expiration, or use-by-date will not be displayed.
For all products, we recommend handling per defined conditions as printed in our product literature and website product descriptions. We recommend that products should be routinely inspected by customers to ensure they perform as expected.
For products without retest or expiration dates, our standard warranty of 1 year from the date of shipment is applicable.
For more information, please refer to the Product Dating Information document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/418/501/product-dating-information-06-25-mk.pdfHelpful?
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How is shipping temperature determined? And how is it related to the product storage temperature?
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Products may be shipped at a different temperature than the recommended long-term storage temperature. If the product quality is sensitive to short-term exposure to conditions other than the recommended long-term storage, it will be shipped on wet or dry-ice. If the product quality is NOT affected by short-term exposure to conditions other than the recommended long-term storage, it will be shipped at ambient temperature. As shipping routes are configured for minimum transit times, shipping at ambient temperature helps control shipping costs for our customers. For more information, please refer to the Storage and Transport Conditions document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/316/622/storage-transport-conditions-mk.pdf
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Can I coat it on top of my sensor as a layer to sense CO2?
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Yes, this product can be dispersed in organic solvents, such as 1-Methyl-2-pyrrolidinone (NMP), to form a slurry for coating. However, there is no test on its performance for CO2 sensing.
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is the purity of this product >99%?
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The purity of this product is not determined.
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What is the particle size of the PVDF powder?
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The particle size of this material is approximately 5 um.
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Enquiry on chemical compatibility of PVDF with TMAH 25%.
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PVDF is not compatible with basic solutions such as those prepared using ammonium hydroxide, sodium hydroxide or tetramethylammonium hydroxide.
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Is this material available for nanofibers fabrication to be integrated in textile application And what about its piezoelectric properties?
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This product has not been tested for the suitability for piezoelectric material. However, it may be helpful to review the literature below:
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7825031/
https://www.sciencedirect.com/science/article/pii/S0266353817313751Helpful?
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We need piezoelecteic beta phase pvdf .. Is it available? If not can we know which phase pvdf is available alpha, beta, gamma etc??
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Unfortunately, the phase is not determined for the PVDF products currently offered.
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Is this sample modified Poly(Vinylidene Fluoride)(PVDF) or pure homopolymer PVDF?
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Poly(Vinylidene Fluoride)(PVDF) sample is a pure homopolymer of Vinylidene Fluoride.
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