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The effect of processing conditions on the morphology of polyetheretherketone (PEEK) graphite reinforced composites (APC-2) has been characaterized. Differential scanning calorimetry was utilized to examine the effect of quench rate on recrystallization where a change in mechanism was observed at a rate of 5°C/min. Optical microscopy revealed a decrease in spherulite size and a reduced degree of transcrystallinity at the graphic fiber surface with increasing quench rates. Dynamic mechanical analysis indicated a change in relaxational processes in the Tg region with varying quench rates.
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Tung et al. (1987) studied this question.
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