Obtaining of a PET-CaF2 hybrid multifilament: Non-isothermal crystallization studies

Poly(ethylene terephthalate) (PET) has been mixed with fluorite (CaF₂) particles to obtain micro- and nano-composites aiming to obtain a hybrid multifilament. In first term, the use of two montanic waxes and an amide wax as dispersing agents towards the compatibilization of the inorganic and organic components of the CaF₂/PET composite were considered. To do this, non-isothermal crystallization studies by differential scanning calorimetry have been carried out. Moreover, the influence of the CaF₂ particle size and concentration on the thermal properties of the system have been also studied by this technique. Finally, the extrapolation of the results has materialised as a novel PET/CaF₂ hybrid multifilament. Thermal and mechanical properties and molecular weight of the multifilament have been as well evaluated.