Effects of organic montmorillonite with different interlayer spacing on mechanical properties, crystallization and morphology of polyamide 1010/nanometer calcium carbonate nanocomposites.

Different kinds of organic montmorillonite (OMMT) were added into Polyamide 1010 (PA1010)/nanometer calcium carbonate (nano-CaCO) nanocomposites to prepare PA1010 ternary nanocomposites by melt blending method via twin screw extruder, which were characterized by mechanics performance testing, scanning electron microscope (SEM), wide X-ray diffraction (WAXD) and differential scanning calorimetry meter (DSC). The results revealed OMMT of larger interlayer spacing weaken strong adsorption force between nano-CaCO and matrix so as to boost tensile strength and flexural strength. OMMT of small interlayer spacing could produce more yields and empties in order to make matrix appear plastic fracture characteristics. By SEM images cross-section showed matrix toughness had been improved. Meanwhile more forward translation retrained the formation of α-form while γ-form was facilitated through WAXD, which toughened matrix consequently. Smaller layer spacing OMMT at the same content is obviously able to decrease crystallinity and T at little OMMT content, which exhibited superior dispersion of nanofillers. [ABSTRACT FROM AUTHOR]