Abstract: Using twin-rotor continuous mixer, an intercalated composite was prepared via direct blending of linear low density polyethylene (PE-LLD) melt and low temperature expandable graphite (LTEG). The structure and properties of the composites were studied uisng SEM, XRD, etc. The graphite expanded during the blending with polyethylene resulting in the intercalated into the graphite flakes. Compared with neat polyethylene, the barrier property of the composites was 40 % higher.

Key words: in-situ expanding, linear low density polyethylene, expandable graphite, twin-rotor continuous mixer, intercalation, composite