Polystyrene is a common and widely used plastic obtained from the polymerization of the monomer styrene (Styrene, C₆H₅CH=CH₂). This material is a thermoplastic synthetic polymer, meaning it softens with heat and hardens again after cooling.
Characteristics of Polystyrene
Appearance and Structure
It is usually transparent, colorless, and shiny, and is in the form of a hard solid or foam.
Low density
Its foamed form (EPS) is very light, because it has many air bubbles in its structure.
Mechanical properties
It has high hardness and brittleness, and has relatively good tensile and compressive strength, but it has low impact resistance.
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