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  S1839B  

Polyacrylonitrile (MW 150,000) – S1839B

Additional information

CAS ID

25014-41-9

IUPAC Name

Polyacrylonitrile

Molecular Formula

C3H3N

Molecular Weight

SMILES

C=CC#N

$217.56
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General Information

Additional information

CAS ID

25014-41-9

IUPAC Name

Polyacrylonitrile

Molecular Formula

C3H3N

Molecular Weight

SMILES

C=CC#N

Description

What is Polyacrylonitrile?

Polyacrylonitrile is a thermoplastic polymer that is formed by the polymerization of acrylonitrile monomers. PAN is a transparent and colorless plastic that has high tensile strength, good chemical resistance, and excellent thermal stability.

Uses of Polyacrylonitrile

Polyacrylonitrile (PAN) is a synthetic polymer that is widely used in various industrial and commercial applications. PAN is commonly used in the production of fibers, films and other products. It is often used as a precursor for the production of carbon fibers, which have excellent mechanical properties and are used in various applications, such as aerospace, automotive, and sporting goods.

PAN can also be used in the production of membranes for water treatment and gas separation, as well as in the production of adhesives, coatings, and other industrial products.

Properties

PAN has a molecular weight of 150,000 g/mol (typical), a refractive index of 1.514, a melting point of 317 °C, a glass transition temperature of 85 °C, and a density of 1.184 g/mL at 25 °C. PAN has strong polar nitrile groups, making it relatively insoluble in most solvents. Chemists can convert PAN into high-carbon fibers by undergoing stabilization, carbonization, and graphitization.

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FAQs

What is the polyacrylonitrile structure, and why is it important?
Polyacrylonitrile has a linear polymer structure made up of repeated acrylonitrile units. This polyacrylonitrile structure adds to the material’s exceptional thermal stability, mechanical strength, and chemical resistance, making it useful in various industrial applications.
What are the main features of polyacrylonitrile?
Polyacrylonitrile’s features include muscular tensile strength, thermal stability, resistance to organic solvents, and low gas permeability. These polyacrylonitrile properties make it an ideal material for producing fibres, films, and carbon fibre precursors.
What are the most prevalent applications of polyacrylonitrile in industry?
Polyacrylonitrile makes carbon fibres, textiles, filtration membranes, and high-performance coatings. Its durability and resistance to hostile environments make it ideal for aerospace, automotive, and water treatment applications.
The polyacrylonitrile molecular weight fluctuates during polymerisation, commonly ranging from 40,000 to 70,000 g/mol. Higher molecular weight improves mechanical strength and thermal stability, essential for high-performance applications.
The polyacrylonitrile molecular weight fluctuates during polymerisation, commonly ranging from 40,000 to 70,000 g/mol. Higher molecular weight improves mechanical strength and thermal stability, essential for high-performance applications.
What is the polyacrylonitrile melting point, and why is it difficult to determine?
Polyacrylonitrile’s melting point is difficult to establish since it does not melt but decomposes at 320–322°C. This breakdown behaviour is crucial for its conversion to carbon fibres during industrial processing.