Amorphization of organic compounds by ball milling

We have applied the ball-milling technique to amorphize the organic compounds sucrose and poly(ethylene terephthalate). Differential scanning colorimetry and X-ray diffraction measurements show that the samples have been amorphized by milling. However, differential scanning colorimetry heating runs reveal some differences between the crystallization process of samples mechanically amorphized and those obtained by quenching.