Structure and texture analysis of PVC foils by neutron diffraction
Language English Country Great Britain, England Media print-electronic
Document type Journal Article, Research Support, Non-U.S. Gov't
PubMed
19836250
DOI
10.1016/j.apradiso.2009.09.029
PII: S0969-8043(09)00566-1
Knihovny.cz E-resources
- MeSH
- Crystallography methods MeSH
- Membranes, Artificial * MeSH
- Neutron Diffraction methods MeSH
- Polyvinyl Chloride chemistry MeSH
- Publication type
- Journal Article MeSH
- Research Support, Non-U.S. Gov't MeSH
- Names of Substances
- Membranes, Artificial * MeSH
- Polyvinyl Chloride MeSH
Crystalline order of molded and then bi-axially stretched foils prepared from atactic PVC resin is investigated by means of wide-angle neutron diffraction (WAND). The observed high-resolution WAND patterns of all samples are dominated by a sharp maximum corresponding to the inter-planar distance 0.52 nm. Two weaker maxima are also resolved at 0.62 and 0.78 nm. Intensities of the peaks vary with deformation ratios of the samples and their diffraction position. Average size of the coherently scattering domains is estimated as approximately 4-8 nm. Based on the experimental data, a novel model of crystalline order of atactic PVC is proposed.
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