Cold-crystallization of Poly(ether-ether-ketone) amorphized by ball milling

A partial amorphization of semicrystalline poly(ether-ether-ketone) has been induced mechanically by means of the ball-milling technique. The thermal behavior of the polymer has been studied using temperature-modulated differential scanning calorimetry. The cold crystallization of the amorphized material, taking place close to the glass transition temperature, can be detected on the nonreversing heat flow signal clearly separated from the glass transition effect.