Based on the chemical structures and make-ups of polyurethane and polystyrene, how would the flame tests of these two materials differ? What would you expect to happen in the presence of a flame source? Describe flame color, smoke characteristics, and overall flammability
What will be an ideal response?
Polystyrene contains a benzene ring which helps determine the characteristics of this material. In a flame in will burn readily and have a yellow flame that is dark and gives off sooty smoke.
Polyurethane contains two monomers with at least two reactive groups. As a thermoset or elastomer it has a poor high temperature stability which leads to the
belief that it is flammable and would burn bright with less smoke or none, and would be black and sooty.
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