The influence of POE-g-MAH content and MAH grafting rate on the blends of PA66/ POE/ POE-g-
MAH were investigated. The brittle-ductile transition occurred when the content of POE-g-MAH changed from
10wt% to 15wt% in the blends. With increase of the content of POE-g-MAH, the notched impact strength and the
elongation at break of the blends increased significantly, while the tensile strength, bending strength and modulus declined,
the melt flow rate and the water absorption decreased. While in PA66/ POE/ POE-g-MAH blends, the brittle
-ductile transition occurred when the graft rate of POE-g-MAH changed from 0. 05wt% to 0. 2wt%. With the increase
of graft rate of POE-g-MAH, the notched impact strength and the elongation at break of blends increased,
while the tensile strength, bending strength and modulus, the water absorption did not change obviously, and the melt
flow rate decreased. SEM photographs and Molau compatibility experiment showed that, POE-g-MAH had a significant
effect both on the compatibility and toughness on PA66.