An unusual branching in single crystals of isotactic poly(4-methyl-1-pentene) |
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Authors: | J. Ruan |
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Affiliation: | Institut Charles Sadron (CNRS-ULP), 6, rue Boussingault, 67083 Strasbourg, France |
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Abstract: | Single crystals of low Mw poly(4-methyl-1-pentene) (P4MP1) in its form I display an unusual streaking of their diffraction pattern. The crystals also frequently give rise to composite diffraction patterns made of two patterns rotated by 37°. The streaking indicates a structural disorder, namely a shift of nearby layers along the a or b axis by one quarter of the unit-cell edge. The daughter crystals, rotated by 37°, are produced on the edges of the parent crystals via an epitaxial growth that is a direct consequence of the structural disorder. |
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Keywords: | Isotactic poly(4-methyl-1-pentene) Structural disorder Epitaxial branching |
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