Amorphous Polystyrene (PS) is a semi-crystalline engineering thermoplastic that is prevalent in many areas of our daily life. An expanded material, PS is used as an ultra-light foam material. Its weather and UV resistance is limited, its melting point is low and it is very sensitive against many organic solvents.
Polystyrene lends itself extremely well to injection molding for mass-produced articles. Its low tendency to evanesce or shrink during processing allows for components in near net shape.
In electrical engineering, polystyrene is used for its good insulating properties to make switches, coil bodies and casings.
In food packaging, PS is common in thermoformed cups or foam trays. However polystyrol is a heavy to wet plastic, so a plasma treatment is very helpful to get a perfect wettably surface.
Foamed polystyrene is used as a shock-absorbing packaging material, insulation material and as a buoyancy device.
Plasma treatment can be used to make an adhesion improvement and create a wettably surface.