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Merck

182702

Poly(vinylidene fluoride)

powder

Synonym(s):

PVDF

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About This Item

Linear Formula:
(CH2CF2)n
CAS Number:
24937-79-9
MDL number:
MFCD00084470
UNSPSC Code:
12162002
PubChem Substance ID:
24851010
NACRES:
NA.23

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vapor pressure

15 mmHg ( 32 °C)

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

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1 of 4

This Item
427152427144427160
Poly(vinylidene fluoride) powder

Sigma-Aldrich

182702

Poly(vinylidene fluoride)

Poly(vinylidene fluoride) average Mw ~180,000 by GPC, average Mn ~71,000, beads or pellets

Sigma-Aldrich

427152

Poly(vinylidene fluoride)

Poly(vinylidene fluoride) average Mw ~275,000 by GPC, average Mn ~107,000, pellets

Sigma-Aldrich

427144

Poly(vinylidene fluoride)

Poly(vinylidene fluoride-co-hexafluoropropylene)

Sigma-Aldrich

427160

Poly(vinylidene fluoride-co-hexafluoropropylene)

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

vapor pressure

15 mmHg ( 32 °C)

vapor pressure

15 mmHg ( 32 °C)

vapor pressure

15 mmHg ( 32 °C)

vapor pressure

-

mol wt

average Mw ~534,000 by GPC

mol wt

average Mn ~71,000, average Mw ~180,000 by GPC

mol wt

average Mn ~107,000, average Mw ~275,000 by GPC

mol wt

average Mn ~130,000, average Mw ~400,000

transition temp

Tg −38 °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)

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][4]

Application

Poly(vinylidene fluoride) (PVDF) is used in nanoporous electrodes.[5] It is used to synthesize composites comprising of ultrafine fibers of PVDF embedded with carbon nanotubes.[2] It can be used in sensors, actuators, for energy storage,[1] sphygmomanometers, pressure sensors and nanogenerators,[4] lithium ion batteries.[6] Additionally, it may find application as matrix for PVDF-nanoclay nanocomposites[7] and PVDF acrylic rubber/clay nanocomposite hybrid.[8]

Storage Class Code

11 - Combustible Solids

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

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Certificates of Analysis (COA)

Lot/Batch Number
0000512341
0000512341
0000499467
0000499466
0000499467

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Mohammad Mahdi Abolhasani et al.
PloS one, 9(2), e88715-e88715 (2014-02-20)
In this paper, intercalation of nanoclay in the miscible polymer blend of poly(vinylidene fluoride) (PVDF) and acrylic rubber(ACM) was studied. X-ray diffraction was used to investigate the formation of nanoscale polymer blend/clay hybrid. Infrared spectroscopy and X-ray analysis revealed the
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)
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
View All Related Papers

Questions

1–9 of 9 Questions  

  1. How can I determine the shelf life / expiration / retest date of this product?

    1 answer

    1. 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.pdf

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  2. How is shipping temperature determined? And how is it related to the product storage temperature?

    1 answer

    1. 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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  3. Can I coat it on top of my sensor as a layer to sense CO2?

    1 answer

    1. 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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  4. is the purity of this product >99%?

    1 answer

    1. The purity of this product is not determined.

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  5. What is the particle size of the PVDF powder?

    1 answer

    1. The particle size of this material is approximately 5 um.

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  6. Enquiry on chemical compatibility of PVDF with TMAH 25%.

    1 answer

    1. PVDF is not compatible with basic solutions such as those prepared using ammonium hydroxide, sodium hydroxide or tetramethylammonium hydroxide.

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  7. Is this material available for nanofibers fabrication to be integrated in textile application And what about its piezoelectric properties?

    1 answer

    1. 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/S0266353817313751

      Helpful?

  8. We need piezoelecteic beta phase pvdf .. Is it available? If not can we know which phase pvdf is available alpha, beta, gamma etc??

    1 answer

    1. Unfortunately, the phase is not determined for the PVDF products currently offered.

      Helpful?

  9. Is this sample modified Poly(Vinylidene Fluoride)(PVDF) or pure homopolymer PVDF?

    1 answer

    1. Poly(Vinylidene Fluoride)(PVDF) sample is a pure homopolymer of Vinylidene Fluoride.

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