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181315

Sigma-Aldrich

Polyacrylonitrile

average Mw 150,000 (Typical)

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Synonym(s):
Vinyl cyanide
Linear Formula:
(C3H3N)n
CAS Number:
25014-41-9
MDL number:
MFCD00084395
UNSPSC Code:
12162002
PubChem Substance ID:
24850927
NACRES:
NA.23

mol wt

average Mw 150,000 (Typical)

Quality Level

200

refractive index

n20/D 1.514

transition temp

Tm 317 °C
Tg 85 °C

density

1.184 g/mL at 25 °C (lit.)

SMILES string

C=CC#N

InChI

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

InChI key

NLHHRLWOUZZQLW-UHFFFAOYSA-N

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General description

PAN molecule has strong polar nitrile groups.It is relatively insoluble in nature. PAN based carbon fibers possess very high strength compared to other polymeric precursors. When subjected to heat treatment, it can produce high carbon yield giving rise to thermally stable, highly oriented, graphite like molecular structure. Generating carbon-fiber from PAN based fiber is a combination of three processes-- namely stabilization, carbonization and graphitization.

Application

Polyacrylonitrile (PAN) is used as polymeric carbon precursor to form carbon fibers, electrospun activated carbon materials having meso-macro pores, carbon black additives.These are consecutively used in hydrogen storage, EMI shielding, electrochemistry, separation processes. It may find applications in PAN based single walled carbon nanotube composites.

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Regulatory Information

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  1. Which document(s) contains shelf-life or expiration date information for a given product?

    If available for a given product, the recommended re-test date or the expiration date can be found on the Certificate of Analysis.

  2. How do I get lot-specific information or a Certificate of Analysis?

    The lot specific COA document can be found by entering the lot number above under the "Documents" section.

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

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

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

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

  6. Will Product 181315, Polyacrylonitrile, contain acrylonitrile?

    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.

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

    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. 

  8. My question is not addressed here, how can I contact Technical Service for assistance?

    Ask a Scientist here.

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, 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
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)
Superior prospect of chemically activated electrospun carbon fibers for hydrogen storage
Im JS, et al.
Mat. Res. Bul., 44(9), 1871-1878 (2009)
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