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Study of Rheological Behavior on Polypropylene/Poly (ethylene-Octene-1) Blends

Lixin Mao

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Abstract

The rheological behavior of polypropylene/poly(ethylene-Octene-1) blends were investigated by means of Advanced Rheology Expansion System (APvES).The results of dynamic rheological tests indicated that the structure of PP and content of POE have obvious effect on the shear rheological behavior of PP/POE blends.With the increase of POE content,the increase degree of the storage modulus and the shear viscosity of PP1/POE blends are less than those of PP2/POE blends.The above two blend systems showed greater increase in their storage modulus and the shear viscosity at POE content of twenty to thirty percent and ten to twenty percent respectively when brittle-ductile transition happened. Interfacial slip existed between PP and POE,which was greatly influenced by the compatibility of PP and POE,and the interfacial slip between PPl and POE was more obvious than that between PP2 and POE.

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What this paper is about

The rheological behavior of polypropylene/poly(ethylene-Octene-1) blends were investigated by means of Advanced Rheology Expansion System (APvES).The results of dynamic rheological tests indicated that the structure of PP and content of POE have obvious effect on the shear rheological behavior of PP/POE blends.With the increase of POE content,the increase degree of the storage modulus and the shear viscosity of PP1/POE blends are less than those of PP2/POE blends.The above two blend systems showed greater increase in their storage modulus and the shear viscosity at POE content of twenty to thirty percent and ten to twenty percent respectively when brittle-ductile transition happened. Interfacial slip existed between PP and POE,which was greatly influenced by the compatibility of PP and POE,and the interfacial slip between PPl and POE was more obvious than that between PP2 and POE.

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Available abstract

The rheological behavior of polypropylene/poly(ethylene-Octene-1) blends were investigated by means of Advanced Rheology Expansion System (APvES).The results of dynamic rheological tests indicated that the structure of PP and content of POE have obvious effect on the shear rheological behavior of PP/POE blends.With the increase of POE content,the increase degree of the storage modulus and the shear viscosity of PP1/POE blends are less than those of PP2/POE blends.The above two blend systems showed greater increase in their storage modulus and the shear viscosity at POE content of twenty to thirty percent and ten to twenty percent respectively when brittle-ductile transition happened. Interfacial slip existed between PP and POE,which was greatly influenced by the compatibility of PP and POE,and the interfacial slip between PPl and POE was more obvious than that between PP2 and POE.

Key concepts: Materials science, Rheology, Polypropylene, Composite material, Octene, Dynamic mechanical analysis, Brittleness, Dynamic modulus

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