On the plastic deformation of bulk syndiotactic polypropylene |
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Authors: | J. Petermann J. Loos A. Waldöfner |
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Affiliation: | 1. Lehr stuhl für Werkstoffkunde, Universit?t Dortmund, 44221, Dortmund
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Abstract: | The plastic deformation of syndiotactic polypropylene (sPP) bulk samples has been investigated. A structural comparison of the initial states before and after plastic deformation by necking is carried out by X-ray diffraction observations. Independent of the initial states (amorphous, semi-crystalline with different crystal phases), only the planar all-trans crystal form of sPP is present in the deformed samples after necking. Form these results, molecular mechanisms of the plastic deformation in the neck zone of semi-crystalline polymers will be discussed. Received: 11 February 1997 Accepted: 15 August 1997 |
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Keywords: | Semi-crystalline polymers X-ray diffraction necking phase transformation molecular mechanisms |
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