Study on the structure and properties of the low melting point of nylon 6 modified by organic Montmorillonite

摘要

The Lower-melting point polyamide-6 (LPA6), with the melting point of 198°C, were a produced in a corotating twin screw extruder. The low melting point PA6/Organic montmorillonite (OMMT) composites were obtained by the method of melt extrusion. The effect of the content of OMMT on melting, morphology, crystallization behavior, mechanical properties of the composites was investigated by TEM, DSC, XRD. This work deals with combination of both components, which are the structure-property relationship of polymer/layered silicate nanocomposites, and the effects of complexation reaction on the montmorillonite dispersion in the matrix. Results showed that the complexation reaction have little effects on the exfoliation and dispersion of OMMT, and completely exfoliated with the content of OMMT was 5 wt%. But it have significantly effects on the crystallization behavior of nylon 6, lead to the decraresd of the crystallinity. It was demonstrated that OMMT has a higher exfoliation degree lead to a balanced and enhanced mechanical behaviour.