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181781

Sigma-Aldrich

Poly(2,6-dimethyl-1,4-phenylene oxide)

powder

Synonym(s):

2,6-Dimethyl-1,4-phenylene ether homopolymer, 2,6-Dimethylphenol homopolymer, 2,6-Dimethylphenol polymer, Poly(2,6-dimethylphenylene oxide)

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About This Item

Linear Formula:
[C6H2(CH3)2O]n
CAS Number:
25134-01-4
MDL number:
MFCD00084368
UNSPSC Code:
12162002
PubChem Substance ID:
24850954
NACRES:
NA.23
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form

powder

Quality Level

100

transition temp

Tg 211 °C
Tm 268 °C

density

1.06 g/mL at 25 °C (lit.)

SMILES string

Cc1cc(O)cc(C)c1O

InChI

1S/C8H10O/c1-6-4-3-5-7(2)8(6)9/h3-5,9H,1-2H3

InChI key

NXXYKOUNUYWIHA-UHFFFAOYSA-N

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General description

Poly(2,6-dimethyl-1,4-phenylene oxide) (PPO) is an anion exchange membrane (AEM) material that is mainly used as a cross-linker in which the methyl groups are used to bond with ultraviolet (UV) excited ketones.[1][2]

Application

Imidazolium modified PPO with liquid ionic graphene oxide can be used as an anion exchange membrane (AEM) composite with a peak power density of 136 mW cm−2 for use in the fabrication of high performance fuel cells.[3] It may also be sulfonated to form a long chained polymeric structure with an efficiency of 81.8% at a current density of 120 mA cm−2 for potentiall use in vanadium redox flow batteries (VRFBs) as effective energy storage systems.[4] It may also be used in the formation of AEMs, which can be used in the development of microbial desalination cell system (MDCS).[5]

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
MKCW1887
MKCW1886
MKCS9504
MKCL7109
MKCK8694

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Investigation of patterned and non-patterned poly (2, 6-dimethyl 1, 4-phenylene) oxide based anion exchange membranes for enhanced desalination and power generation in a microbial desalination cell
Moruno FL, et al.
Solid State Ionics, 314(1), 141-148 (2018)
Synthesis and characterization of a phosphine oxide based poly (arylene ether ketone) and blends with poly (2, 6-dimethyl-1, 4-phenylene oxide) for gas separations
Narang GS, et al.
Polymer, 138, 156-168 (2018)
A novel long-side-chain sulfonated poly (2, 6-dimethyl-1, 4-phenylene oxide) membrane for vanadium redox flow battery
Yan X, et al.
International Journal of Hydrogen Energy, 43(1), 301-310 (2018)
Poly (2, 6-dimethyl-1, 4-phenylene oxide)/ionic liquid functionalized graphene oxide anion exchange membranes for fuel cells
Yang Q, et al.
Journal of Membrane Science , 552, 367-376 (2018)
Crosslinked poly (2, 6-dimethyl-1, 4-phenylene oxide) polyelectrolyte enhanced with poly (styrene-b-(ethylene-co-butylene)-b-styrene) for anion exchange membrane applications
Wang Z, et al.
Journal of Membrane Science , 564, 492-500 (2018)

Questions

1–3 of 3 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/449/386/product-dating-information-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. May I know the average molecular weight of the polymer?

    1 answer

    1. The approximate molecular weight for this product is 50,000 g/mol.

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