Journal
MACROMOLECULAR MATERIALS AND ENGINEERING
Volume 294, Issue 9, Pages 575-581Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/mame.200900066
Keywords
convergent flows; fibers; morphology
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The morphology of PE/CL nanocomposite samples subjected to convergent flows is studied. Elongational flow - the typical flow involved in spinning and film-blowing processing operations - significantly increases with the reduction of the capillary diameter. The values of the convergent extensional stress (calculated by Cogswell's formula) for the PE/CL systems, for all the adopted capillary geometries, are greater than the calculated values for pure polyethylene. The applied convergent flow, at the entrance of the capillary, is able to change the clay morphology and consequently the final material properties on the PE/CL system with limited affinity between the matrix and organo-modified clay particles.
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