Mechanical properties and molecular mobility in oriented polyolefines |
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| Authors: | B. E. Krisyuk A. A. Popov G. E. Zaikov F. de Candia V. Vittoria R. Russo |
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| Affiliation: | (1) Institute of Chemical Physics, Academy of Sciences, Moscow, USSR;(2) Present address: Institute of Technology and Rheology of Polymers, Arco Felice, Napoli, Italy |
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| Abstract: | The static modulus of elasticity (E) and the correlation time of rotation ( c) of 2,-2,6,6-tetramethylpiperidine-1-oxyl are studied as a function of the temperature (210<T <350°K) for oriented films of isotactic polypropylene and polyethylene of high and low density.E andc change both upon heating and polymer orientation; this result indicates that sample properties are influenced by the microstructure of the amorphous phase where probes are localized. |
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| Keywords: | Fibers elastic modulus correlation time molecularmobility orientation |
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