Investigation of the Character of Molecular Movement in the Polypropylene Method,
ARMY FOREIGN SCIENCE AND TECHNOLOGY CENTER CHARLOTTESVILLE VA
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Structure of polypropylene crystals pp is studied microscopically and by the method of nuclear magnetic resonance NMR. The second moments of NMR of samples of pp with different molecular structure differ considerably. The nature of the relationship between second moments of NMR and temperature depends upon the degree of defects and imperfections in high-molecular compounds.
- Atomic and Molecular Physics and Spectroscopy