On the crystallization of syndiotactic polypropylene (sPP)/high density polyethylene (HDPE) blends |
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| Authors: | M Bonnet J Loos J Petermann |
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| Institution: | (1) Department of Chemical Engineering Institute of Material Science University of Dortmund Emil-Figge-Str. 66 44221 Dortmund Germany, DE;(2) Eindhoven Polymer Laboratories, EPL Eindhoven University of Technology PO Box 513 5600 MB Eindhoven The Netherlands, NL |
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| Abstract: | The crystallization kinetics of syndiotactic polypropylene (sPP)/high-density polyethylene (HDPE) blends were investigated
by thermal and microscopical methods. Isothermal crystallization obtained by differential scanning calorimetry (DSC) was used
to study the nucleation ability of HDPE on sPP crystallization. Morphological studies with polarized light microscopy (PLM)
of solution cast films resulted in a transcrystalline-like overgrowth of the sPP on HDPE spherulites. The arrangement of the
HDPE lamellar crystals in the blend were observed in transmission electron microscopy (TEM). But from these results, no straightforward
conclusion about the transcrystalline nature of the sPP crystals can be given.
Received: 24 November 1997 Accepted: 23 February 1998 |
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| Keywords: | Crystallization syndiotactic polypropylene polyethylene blends nucleation |
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