Styrene polymers (PS)
Description (definition)
Styrene polymers, known by the abbreviation PS (polystyrene), are thermoplastics produced by the polymerization of styrene. They are characterized by their high transparency, rigidity and ease of processing. Polystyrene is often used in the packaging industry, in the construction industry and in the manufacture of disposable products such as cups or cutlery. Variants such as expanded polystyrene (EPS), also known as Styrofoam, offer excellent insulating properties.
Example
A common example is the use of EPS for packaging materials. Thanks to its lightweight and shock-absorbing properties, it protects sensitive products such as electronic devices or household goods during transportation.
What types of styrene polymers are there and how do they differ?
There are different types of styrene polymers, including crystalline polystyrene (PS), expanded polystyrene (EPS) and high-impact polystyrene (HIPS). PS is transparent and rigid, EPS is light and insulating, while HIPS has a higher impact strength due to the addition of rubber particles and is used for robust applications.
Where is polystyrene often used?
Polystyrene is widely used in the packaging industry for food containers, disposable cups and protective packaging. In the construction industry, EPS is used for thermal insulation, while HIPS can be found in electronic housings or toys.
Is polystyrene recyclable?
Yes, polystyrene is recyclable, but the recycling process is logistically more challenging due to the low material density of EPS. Recycled polystyrene is often processed into granulate and reused in new products such as insulation materials or plastic parts.