Nylon 6-organoclay nanocomposites were prepared via direct melt compounding
using a conventional twin screw extruder. The mechanical properties and mo
rphology of these nanocomposites were determined and compared to similar ma
terials made by an in situ polymerization process. The organoclay was well
exfoliated into the nylon 6 matrix when compounded with the twin screw extr
uder but use of a single screw extruder was far less effective. The mechani
cal properties of the organoclay nanocomposites were significantly increase
d with marginal decrease of ductility and showed much greater values than g
lass fiber composites. (C) 2000 Elsevier Science Ltd. All rights reserved.