An investigation was made of the structure and thermophysical properties of composites based on polyethylene terephthalate (PET) and montmorillonite clay modified with organomodifiers of different nature. A study was made of the effect of organoclays on the morphology and crystallisation processes of PET. It was established that the introduction of small quantities of organoclay leads to an increase in the crystallisation rate, and also in the heat resistance of PET.
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