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Effect of molecular weight distribution on the rheological and mechanical properties of polypropylene
Author(s) -
Tzoganakis C.,
Vlachopoulos J.,
Hamielec A. E.,
Shinozaki D. M.
Publication year - 1989
Publication title -
polymer engineering and science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.503
H-Index - 111
eISSN - 1548-2634
pISSN - 0032-3888
DOI - 10.1002/pen.760290607
Subject(s) - materials science , melt flow index , die swell , composite material , polypropylene , rheology , plastics extrusion , flexural strength , ultimate tensile strength , flexural modulus , crystallization , molar mass distribution , polymer , copolymer , thermodynamics , physics
The effect of molecular weight distribution on the Theological and mechanical properties of a series of polypropylenes is evaluated. The polypropylenes tested were produced by controlled chemical degradation in a single‐screw plasticating extruder. Measured properties include shear, extensional and intrinsic viscosity, melt flow index, extrudate swell, melting and crystallization temperatures, impact strength, flexural modulus, and tensile stress.