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469629

Sigma-Aldrich

Poly[4,5-difluoro-2,2-bis(trifluoromethyl)-1,3-dioxole-co-tetrafluoroethylene]

dioxole 87 mol %

Synonym(s):

PTFE AF, PTFE AF 2400 PTFE AF

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About This Item

CAS Number:
37626-13-4
MDL number:
MFCD00803821
UNSPSC Code:
12352103
NACRES:
NA.23

description

contact angle 105 ° with water
critical surface energy 15.6 dyn/cm

composition

dioxole, 87 mol %

dielectric constant

1.904, 1 MHz (ASTM D 150)

refractive index

n20/D 1.29

solubility

fluorinated solvents such as perfluoromethylcyclohexane, perfluorobenzene, and perfluorodecalin: soluble

density

1.67 g/mL at 25 °C

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General description

Poly(4,5-difluoro-2,2-bis(trifluoromethyl)-1,3-dioxole-co-tetrafluoroethylene)(AF2400) is a fluorinated polymer that formed by copolymerization of 4,5-difluoro-2,2-(trifluoromethyl)-1,3-dioxole(PDD) and tetrafluoroethylene(TFE). It has a relatively high glass transition temperature(Tg) and optical transparency which allows it be a photo-stable polymer that can be used for a wide range of coating application in electronic and electrochemical industry.
A tunable, polymeric, photonic material.

Application

AF2400 dissolved in supercritical CO2 as a solvent can be used as an activated layer that forms an electrode for fuel cell applications. It may be used in the fabrication of organic nanofiltration membrane with polytetrafluoroethylene(PTFE) that can be used in the extraction of hexane from crude mixture of soybean oil. Nanocomposites of silver nanoparticles(AgNPs) may be formed by incorporating AF2400 via vapour phase co-deposition process that can be used in surface enhanced raman spectroscopy sensors and color filters.
Optoelectronic devices for optical clarity, low-refractive index coating for optical devices, protective coating for chemical resistance, release coating, and sight window for harsh chemical environments.

Features and Benefits

High gas permeability, high compressibility, good creep resistance, low thermal conductivity, transparent to microwaves and the lowest dielectric constant of any known fluoropolymer.

Physical form

Amorphous copolymer.

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

Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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AF2400/PTFE composite membrane for hexane recovery during vegetable oil production.
Li X, et al.
Separation and Purification Technology, 181(25), 223-229 (2017)
Mechanism of 157 nm photodegradation of poly (4, 5-difluoro-2, 2-bis (trifluoromethyl)-1, 3-dioxole-co-tetrafluoroethylene)(teflon AF).
Blakey I, et al.
Macromolecules, 40(25), 8954-8961 (2007)
Properties of thin Teflon AF 2400 coatings deposited onto carbon fabric from solutions in supercritical carbon dioxide.
Kolomytkin DO, et al.
Polymer Science, Series A, 59(1), 42-52 (2017)
Active layer materials coated with Teflon AF nano-films deposited from solutions in supercritical CO2 for fuel cell applications.
Elmanovich IV, et al.
International Journal of Hydrogen Energy, 38(25), 10592-10601 (2013)
Electrical conductivity of thin-film composites containing silver nanoparticles embedded in a dielectric fluoropolymer matrix.
Wei H and Eilers H, et al.
Thin Solid Films, 517(2), 575-581 (2008)

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