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- W4256308832 abstract "The films made of isotactic polypropylene were strained up to 0.8 of their ultimate strain and subjected to isometric stress relaxation during 5 days. The strain–stress curves were measured at various stages of the sample treatment and the tangent moduli (Et) of unstrained, as-strained and relaxed films were determined. The changes of values of Et were put in comparison with the structural evolution of strained samples observed using the infrared and low-frequency Raman spectroscopic techniques. It was concluded that the three-dimensional intercrystallite bridges composed of straight-chain segments of lengths Lc<L<2Lc (Lc is the average thickness of crystallites) destruct as a result of chain-breaking process, but due to the chain-straightening events in isometrically relaxing samples, the intercrystallite space transforms to the rigid amorphous phase composed of ‘individual’ one-dimensional molecular stems." @default.
- W4256308832 created "2022-05-12" @default.
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- W4256308832 date "2004-03-01" @default.
- W4256308832 modified "2023-09-28" @default.
- W4256308832 title "Intrafibrillar bridging structures in strained isotactic polypropylene" @default.
- W4256308832 doi "https://doi.org/10.1016/s0032-3861(03)01215-1" @default.
- W4256308832 hasPublicationYear "2004" @default.
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