Structural development of natural rubber during uniaxial stretching by in situ wide angle X-ray diffraction using a synchrotron radiation

Structural development of natural rubber during uniaxial stretching was examined by an in situ wide angle X-ray diffraction measurement using a synchrotron. During stretching, the amorphous part showed little change, i.e. an amorphous halo remained clear even at 500% strain. The fraction of induced...

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Bibliographic Details
Published in:Polymer (Guilford) 2002-03, Vol.43 (7), p.2117-2120
Main Authors: Murakami, Syozo, Senoo, Kazunobu, Toki, Shigeyuki, Kohjiya, Shinzo
Format: Article
Language:English
Subjects:
Applied sciences
Exact sciences and technology
In situ X-ray diffraction by a synchrotron
Molecular orientation
Natural polymers
Natural rubber
Physicochemistry of polymers
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Summary:Structural development of natural rubber during uniaxial stretching was examined by an in situ wide angle X-ray diffraction measurement using a synchrotron. During stretching, the amorphous part showed little change, i.e. an amorphous halo remained clear even at 500% strain. The fraction of induced crystals was very small, though a clear crystalline pattern was observed at 400% strain. Some polymer chains were oriented and crystallized, but most of the chains were not oriented at all in spite of large deformations of the specimen. Only a small amount of polymer chains contributes to the stress and hysteresis loss during elongation.
ISSN:0032-3861
1873-2291
DOI:10.1016/S0032-3861(01)00794-7