Filler dispersion and electrical properties of polyamide 12/MWCNT-nanocomposites produced in reactive extrusion via anionic ring-opening polymerization

Subsequently, the in-situ polymerized composites were compared with composites obtained by direct melt mixing of PA12 with MWCNTs. In comparison to the composites from commercial PA12 and MWCNTs, the dispersion of primary MWCNT agglomerates via in-situ polymerization is considerably better from which better mechanical properties may be expected. However, better dispersion did not result in a reduced electrical percolation threshold and resistivity. In summary, in-situ polymerization of lauryl lactam under the given conditions was shown to be a suitable processing route to obtain good MWCNT dispersion in PA12.