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Using the table Melting and Glass Transition Temperatures for Some of the More Common Polymeric Materials, which of the following polymer(s) would be suitable for the fabrication of cups to contain hot coffee: (a) polyethylene, (b) polypropylene, (c) poly(vinyl chloride), (d) polystyrene, (e) polycarbonate, and (f) PET polyester? O (a) and (d) O only (e) (a), (b), and (c) (b), (c), (f), and (e) O (d) and (e)

Answer :

Probably a little below 100°C (212°F) is the maximum temperature for hot coffee. Only polycarbonate and polystyrene have glass transition temperatures of 100°C or higher (Table 15.2), making them the only polymers on the list that would work for this application.

The temperature at which an amorphous polymer transitions from a hard, glassy state to a soft, leathery state, or vice versa. Tg is a direct correlation between a material's strength and capabilities in a specific end-use application.

Learn more about the temperature,

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