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Melt viscosity of calcium‐carbonate‐filled low density polyethylene: Influence of matrix‐filler and particle‐particle interactions
Author(s) -
Bomal Y.,
Godard P.
Publication year - 1996
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.10408
Subject(s) - materials science , composite material , viscosity , filler (materials) , particle (ecology) , polyethylene , calcium carbonate , composite number , polymer , particle size , sphere packing , chemical engineering , oceanography , engineering , geology
The melt viscosity of filled polymers depends on the filler particle packing. It is shown that the maximum particle packing for a low density polyethylene, filled with calcium carbonate, depends strongly on the filler surface treatment. This packing can be evaluated from melt viscosity measurements using the Quemada model. From contact angle measurements and using the Lee unified adhesion theory, it has been demonstrated that the maximum packing depends on particle‐particle and matrix‐filler interactions. The competition between both types of interaction leads to different organizations of particles in the composite.