Morphology modification of polyethylene/clay nanocomposite samples under convergent flow

F.P. La Mantia, Marino Rosamaria, Nadka Dintcheva

Research output: Contribution to journalArticlepeer-review


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.
Original languageEnglish
Pages (from-to)575-584
Number of pages10
JournalMacromolecular Materials and Engineering
Issue number9
Early online date4 Aug 2009
Publication statusPublished - 14 Sept 2009


  • convergent flows
  • fibers
  • morphology


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