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The thermodynamic properties of crystalline and amorphous poly(2,6‐dimethyl‐1,4‐phenylene ether) (PPO Registered trademark of General Electric Company. polymer, General Electric Co.) have been studied calorimetrically between 80 and 570°K. The calculated configurational entropy of this polymer, of similar magnitude to other glass‐forming liquids, is consistent with the combination of an unusually high ratio of Tg/Tm, and a low melting entropy.
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Karasz et al. (1968) studied this question.
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