Polypropylene facts for kids
| Polypropylene | |
|---|---|
 |
|
| IUPAC name | poly(propene) |
| Other names | Polypropylene; Polypropene; Polipropene 25 [USAN];Propene polymers; Propylene polymers; 1-Propene |
| Identifiers | |
| CAS number | |
| Properties | |
| Molecular formula | (C3H6)n |
| Density | 0.855 g/cm3, amorphous 0.946 g/cm3, crystalline |
| Melting point |
130–171 °C (266–340 °F) |
| Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa) | |
Polypropylene (PP), or polypropene, is a type of plastic. It is a thermoplastic polymer which can be made into a fibre for yarn and fabric, film for packaging, or many other shapes.
As a plastic it is opaque and often brightly colored. It is tough, and resists many solvents, acids and bases.
It can be formed into a thin thread that is woven into a special strap that can be found on backpacks, bags, and other things.
In 2008, the global market for polypropylene had a volume of 45.1 million metric tons, which led to a turnover of about $65 billion (~ €47.4 billion).
Images for kids
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Polypropylene items for laboratory use, blue and orange closures are not made of polypropylene.
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Various polypropylene yarns and textiles
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Micrograph of polypropylene
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A ball-and-stick model of syndiotactic polypropylene.
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Polypropylene lid of a Tic Tacs box, with a living hinge and the resin identification code under its flap
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A polypropylene chair
