GENERAL PURPOSE POLYSTYRENE (GPPS)

Polystyrene (PS) is another common thermoplastic polymer, and it comes in two main forms: solid (general-purpose polystyrene) and foam (expanded polystyrene, or EPS). Here’s a detailed overview:

Key Properties

1. Transparency: General-purpose polystyrene is often clear, making it useful for applications where visibility of contents is important, like in packaging and some consumer products.
2. Brittleness: Polystyrene can be quite brittle, especially when it’s in its solid form. This brittleness can be a limitation in applications requiring impact resistance.
3. Low Density: Expanded polystyrene (EPS) is lightweight and has excellent insulation properties due to the air trapped within its foam structure.
4. Chemical Resistance: Polystyrene is resistant to some chemicals, but it can be affected by solvents and certain oils.
5. Ease of Processing: It is easy to mold and shape, which makes it versatile for manufacturing.