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Poly(oxy-1,4-phenyleneoxy-1,4-phenylenecarbonyl-1,4-phenylene)

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Synonym(s):
PEEK, Polyether ether ketone
Linear Formula:
(OC6H4OC6H4COC6H4)n
CAS Number:
MDL number:
PubChem Substance ID:
NACRES:
NA.23

form

pellets

Quality Level

hardness

126 (Rockwell R, ASTM D 785)

mp

322 °C

transition temp

Tm (DSC) 322 °C (onset)

solubility

all common solvents: insoluble
concentrated sulfuric acid: soluble

density

1.3 g/mL at 25 °C (lit.)

SMILES string

Oc1ccc(O)cc1.Oc2ccc(cc2)C(=O)c3ccc(O)cc3

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1 of 4

This Item
191094190942181803
mp

322 °C

mp

-

mp

-

mp

-

transition temp

Tm (DSC) 322 °C (onset)

transition temp

Tm (DSC) 213 °C (onset)

transition temp

Tm 227 °C, Tg 66 °C

transition temp

-

density

1.3 g/mL at 25 °C (lit.)

density

1.37 g/mL at 25 °C (lit.)

density

1.31 g/mL at 25 °C (lit.)

density

1.06 g/mL at 25 °C (lit.)

hardness

126 (Rockwell R, ASTM D 785)

hardness

-

hardness

-

hardness

-

solubility

all common solvents: insoluble

solubility

-

solubility

-

solubility

-

General description

Poly(oxy-1,4-phenyleneoxy-1,4-phenylenecarbonyl-1,4-phenylene)(PEEK) is a semi-crystalline polymer with good thermo-mechanical properties and high chemical resistance which can be used as engineering plastics.

Application

PEEK can be sulfonated and coated on nanofiltration(NF) membranes which can be used in the fabrication of antifouling based NF membranes. Sulfonated PEEK (up to 50-70 degree of sulfonation(DS)) can be used in the formation of proton exchange membranes(PEMs) for fuel cells based applications.

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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Effects of sulfonated polyether-etherketone (SPEEK) and composite membranes on the proton exchange membrane fuel cell (PEMFC) performance.
Sengul E, et al.
International Journal of Hydrogen Energy, 34(10), 4645-4652 (2009)
Sulfonated poly (ether ether ketone) membranes for direct methanol fuel cell.
Li L, et al.
Journal of Membrane Science , 226(1-2), 159-167 (2003)
Synthesis and characterization of sulfonated poly (ether ether ketone) for proton exchange membranes.
Xing P, et al.
Journal of Membrane Science , 229(1-2), 95-106 (2004)
Proton conducting composite membranes from polyether ether ketone and heteropolyacids for fuel cell applications.
Zaidi SMJ, et al.
Journal of Membrane Science , 173(1), 17-34 (2000)
Glass transition and melting behavior of poly (oxy-1, 4-phenyleneoxy-1, 4-phenylenecarbonyl-1, 4-phenylene)(PEEK).
Cheng SZD, et al.
Macromolecules, 19(7), 1868-1876 (1986)

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