The density and associated percent crystallinity for two poly(ethylene terephthalate) materials are as follows:
The density and associated percent crystallinity f(g/cm3) Crystallinity (%)
1.408 74.3
1.343 31.2
(a) Compute the density of totally crystalline poly(ethylene terephthalate).
(b) Compute the density of totally amorphous poly(ethylene terephthalate).
(c) Determine the percent crystallinity of a specimen having a density of 1.382 g/cm3.