By X‐ray diffraction and by density measurements as well as by differential scanning calorimetry, the crystallization phenomena of 6‐polyamide(nylon‐6) samples, obtained under different conditions were investigated. Particularly we have analyzed a method for the quantitative determination of the α, γ, and δ (amorphous) phases. This was based on the decomposition of the areas of the X‐ray diffraction patterns. These data were related with density and calorimetric measurements and finally gave a good picture of the transitions involving the different phases. We have used this method for the characterization of nylon‐6 of low and medium viscosity and we have considered the differences of behaviour between the various series of samples.
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Gurato et al. (1974) studied this question.
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