Crystallization behavior of polylactide on highly oriented polyethylene thin films |
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Authors: | Yu-kuan An Shi-dong Jiang Shou-ke Yan Jing-ru Sun Xue-si Chen |
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Institution: | (1) State Key Laboratory of Polymer Physics & Chemistry, Center for Macromolecular Sciences, Institute of Chemistry, The Chinese Academy of Sciences, 100080 Beijing, P. R. China;(2) Institute of Materials Science, Department of Chemical Engineering, University of Dortmund, 44221 Dortmund, Germany; |
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Abstract: | The crystalline structure and morphology of the PLA crystallized isothermally from the glassy state on highly oriented PE
substrates at 130°C were investigated by means of optical microscopy, AFM and X-ray diffraction. The results indicate that
the PE substrate influences the crystallization behavior of PLA remarkably, which leads to the growth of PLA crystals on PE
substrate always in edge-on form rather than the twisted lamellar crystals from edge-on to flat-on when crystallizing the
PLA on glass surface under the same condition. The edge-on PLA lamellae on the PE substrate are preferentially arranged with
their long axes in the chain direction of the PE substrate crystals. It is further demonstrated that except for the different
crystal orientation, the PE does not influence the crystalline modification and crystallinity of the PLA. |
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Keywords: | Polyethylene Poly(lactide) Induced crystallization Morphology Orientation |
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