Abstract: POE and SEBS was melt grafted with MAH in a twin-screw extruder separately, and introduced into PE-LLD forming binary blends PE-LLD/SEBS-g-MAH and ternary blends PE-LLD/POE-g-MAH/SEBS-g-MAH in a internal mixer. The rheological property of the blends was studied using a capillary rheometer. The ternary blend was found a typical pseudo-plastic melt. The apparent viscosity increased with increasing content of SEBS-g-MAH, and the influence of POE-g-MAH on the apparent viscosity of the blends was negligible.

Key words: linear low-density polyethylene, ethylene-octene copolymer grafted maleic anhydride, hydrogenated styrene-butadiene-styrene copolymer grafted maleic anhydride, blending system, rheological behavior