Porosity formation by biaxial stretching in polyolefin films filled with calcium carbonate particles

Porous polymer films were generated by biaxial stretching of polypropylene (PP) and high‐density polyethylene (HDPE) filled with various amounts of calcium carbonate particles. The porosity of the films was measured by mercury porosimetry, and the obtained results were related to the processing cond...

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Bibliographic Details
Published in:Journal of applied polymer science 2012-03, Vol.123 (6), p.3425-3436
Main Authors: Qaiss, A., Saidi, H., Fassi-Fehri, O., Bousmina, M.
Format: Article
Language:English
Subjects:
Applied sciences
biaxial stretching
Calcium carbonate
Composites
Crystallinity
cystallinity
Exact sciences and technology
Forms of application and semi-finished materials
Materials science
Particulate composites
Polyethylenes
Polymer industry, paints, wood
Polymers
Polyolefins
Polypropylenes
Porosity
Stretching
Technology of polymers
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Summary:Porous polymer films were generated by biaxial stretching of polypropylene (PP) and high‐density polyethylene (HDPE) filled with various amounts of calcium carbonate particles. The porosity of the films was measured by mercury porosimetry, and the obtained results were related to the processing conditions and to the morphology development during the biaxial stretching. The results showed that increasing the calcium carbonate (CaCO3) concentration and the draw ratio resulted in porosity increase for PP‐based composite films and in a decreased porosity in HDPE‐based composite films. Such peculiar behavior was connected to interfacial specific interactions between the matrix and the dispersed particles as well as to the crystallinity of the films. © 2011 Wiley Periodicals, Inc. J Appl Polym Sci, 2012
ISSN:0021-8995
1097-4628
DOI:10.1002/app.34612