Epitaxial behavior of HDPE on the boundary of highly oriented iPP substrates |
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| Authors: | S Yan J Petermann D Yang |
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| Institution: | (1) Institute of Materials Science Department of Chemical Engineering, University of Dortmund, 44221 Dortmund, Germany;(2) Polymer Physics Laboratory Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, 130022 Changchun, P.R. China |
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| Abstract: | The epitaxial crystallization behavior of high-density polyethylene on the boundary of highly oriented isotactic polypropylene (iPP) substrates has been investigated by means of atomic force microscopy (AFM) and transmission electron microscopy (TEM). The results obtained from AFM and TEM indicate that the epitaxial nucleation of HDPE on the highly oriented iPP substrates occurs earlier than that in the pure HDPE phase, i.e., homogeneous nucleation. Therefore the epitaxially grown HDPE lamellae can grow across the boundary of the iPP substrate into the HDPE spherulitic phase with the epitaxial orientation relationship remaining. |
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| Keywords: | Epitaxial crystallization high-density polyethylene isotactic polypropylene morphology |
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