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181315

Sigma-Aldrich

Polyacrylnitril

average Mv 150,000

Synonym(e):

Vinyl cyanide

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€ 257,00

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50 G
€ 152,00
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About This Item

Lineare Formel:
(C3H3N)n
CAS-Nummer:
25014-41-9
MDL-Nummer:
MFCD00084395
UNSPSC-Code:
12162002
PubChem Substanz-ID:
24850927
NACRES:
NA.23

€ 152,00

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Mol-Gew.

average Mv 150,000

Qualitätsniveau

200

Brechungsindex

n20/D 1.514

Übergangstemp.

Tm 317 °C
Tg 85 °C

Dichte

1.184 g/mL at 25 °C (lit.)

SMILES String

C=CC#N

InChI

1S/C3H3N/c1-2-3-4/h2H,1H2

InChIKey

NLHHRLWOUZZQLW-UHFFFAOYSA-N

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Verwandte Kategorien

Allgemeine Beschreibung

Das PAN-Molekül hat starke polare Nitrilgruppen. Es ist generell relativ unlöslich. PAN-basierte Kohlenstofffasern sind sehr fest im Vergleich zu anderen polymeren Präkursoren. Bei Hitzebehandlung kann das Molekül eine hohe Kohlenstoffausbeute generieren und wärmebeständige, hochorientierte, graphitartige molekulare Strukturen entstehen lassen. Bei der Generation von Kohlenstofffasern aus PAN-basierten Fasern werden drei Prozesse kombiniert: Stabilisierung, Karbonisierung und Graphitisierung.[1]

Anwendung

Polyacrylnitril (PAN) wird verwendet als polymerer Kohlenstoff-Präkursor bei der Bildung von Kohlenstofffasern,[2][3][4] nanogesponnenen aktivierten Kohlenstoffmaterialien mit Meso-Makro-Poren,[5] Rußzusätzen.[6]Diese werden konsekutiv in der Wasserstoffspeicherung,[2][3][4] EMI-Abschirmung,[6] Elektrochemie, Trennverfahren verwendet.[7] Es sind möglicherweise auch Anwendungen in PAN-basierten, einwandigen Kohlenstoffnanoröhrchen-Kompositen möglich.[7]

Lagerklassenschlüssel

11 - Combustible Solids

WGK

WGK 3

Flammpunkt (°F)

Not applicable

Flammpunkt (°C)

Not applicable

Persönliche Schutzausrüstung

Eyeshields, Gloves, type N95 (US)

Hier finden Sie alle aktuellen Versionen:

Analysenzertifikate (COA)

Lot/Batch Number
0000417037
0000417037
0000408253
0000408252
0000408252

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Die Dokumentenbibliothek aufrufen

Fluorination effects of carbon black additives for electrical properties and EMI shielding efficiency by improved dispersion and adhesion.
Im JS, et al.
Carbon, 47(11), 2640-2647 (2009)
Ji Sun Im et al.
Journal of colloid and interface science, 314(1), 32-37 (2007-06-19)
Mesoporous activated carbon samples were prepared from electrospun PAN-based carbon fibers using physical activation with silica. Textural characterization was performed using nitrogen adsorption at 77 K. The BET specific surface area and pore size distribution of silica activated carbon materials
Polyacrylonitrile single-walled carbon nanotube composite fibers.
Sreekumar TV, et al.
Advanced Materials, 16(1), 58-61 (2004)
A review of heat treatment on polyacrylonitrile fiber.
Rahaman MS, et al.
Polymer Degradation and Stability, 92(8), 1421-1432 (2007)
Ji Sun Im et al.
Journal of colloid and interface science, 318(1), 42-49 (2007-11-09)
Polyacrylonitrile (PAN)-based carbon nanofibers (CNFs) were prepared by using electrospinning method and heat treatment to get the media for hydrogen adsorption storage. Potassium hydroxide and zinc chloride activations were conducted to increase specific surface area and pore volume of CNFs.
Alle zugehörigen Dokumente anzeigen

Artikel

Electrospinning: Enabling Nanostructured Materials

Electrospinning technique applications discussed, emphasizing control of nanofibers and assembly into 3D architectures.

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/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

      Helpful?

  3. Please Confirm PAN (Polyacrylonitrile) is Copolymer or Terpolymer.

    1 answer

    1. Neither - this is a homopolymer comprised only of acrylonitrile units.

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  4. Which synthesis method was used for this polyacrylonitrile (181315)?

    1 answer

    1. Unfortunately, the synthesis method of this product is considered proprietary.

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  5. This is isotactic, syndiotactic or atactic PAN?

    1 answer

    1. The tacticity of this product is not determined.

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  6. What is the degradation temperature of Product 181315, Polyacrylonitrile?

    1 answer

    1. This product has excellent thermal stability below 150°C, but will degrade above this temperature.

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  7. What is Product 181315, Polyacrylonitrile, soluble in?

    1 answer

    1. Some common solvents that can be used are DMSO, N,N-dimethylformamide, ethylene carbonate, propylene carbonate, and nitromethane.

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  8. Will Product 181315, Polyacrylonitrile, contain acrylonitrile?

    1 answer

    1. The product may contain trace amounts of the monomer acrylonitrile.  We do not test for the levels of starting material still present in the final polymer.

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  9. What is the Department of Transportation shipping information for this product?

    1 answer

    1. Transportation information can be found in Section 14 of the product's (M)SDS.To access the shipping information for this material, use the link on the product detail page for the product.

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