Abstract
The effect of annealing on an amorphous polyetheretherketone (PEEK) film is described in this article. PEEK film samples of different crystallinity were obtained by annealing originally amorphous PEEK films. The annealed PEEK film samples were characterized a differential scanning calorimeter (DSC), ultra-violet (UV)-visible spectrometry and X-ray diffraction. The annealing temperature affected the crystallinity of PEEK film greatly after an annealing time of 50 min. Thus, an annealing temperature of 163°C was chosen for obtaining PEEK film samples of different crystallinity. It can be seen that as the annealing temperature or time increases, the crystallinity follows an increasing trend. The DSC and light transmittance data show that the crystallization rate seems to reach a maximum around 40-50 min at an annealing temperature of 163°C. Furthermore, the crystllinity affects the tensile properties of the PEEK film significantly.
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