write the characteristics and uses of polystyrene ( point wise)
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Explanation:
Polystyrene can be solid or foamed. General-purpose polystyrene is clear, hard, and rather brittle. It is an inexpensive resin per unit weight. It is a rather poor barrier to oxygen and water vapour and has a relatively low melting point.
Thermal conductivity: 0.033 W/(m·K) (foam, ρ 0.05 g/cm3)
Melting point: ~ 240 °C (464 °F; 513 K) For Isotactic Polystyrene
Solubility: Soluble in benzene, carbon disulfide, chlorinated aliphatic hydrocarbons, ...
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