Crystallization of Isotactic Polypropylene under High Pressure (γ Phase)
✍ Scribed by Angelloz, C.; Fulchiron, R.; Douillard, A.; Chabert, B.; Fillit, R.; Vautrin, A.; David, L.
- Book ID
- 126098122
- Publisher
- American Chemical Society
- Year
- 2000
- Tongue
- English
- Weight
- 400 KB
- Volume
- 33
- Category
- Article
- ISSN
- 0024-9297
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## Abstract The non‐parallel chain structure determined for γ‐phase isotactic polypropylene (γ‐iPP) is confirmed by Rietveld analysis for highly isotactic high molecular mass iPP crystallized at 200 MPa. The new refinement shows that: (i) stereoregularity or crystallization pressure do not signific
A method for crystallizing oriented samples of the ␥-phase of isotactic polypropylene (iPP) under atmospheric pressure in the presence of nucleating fibers has been developed. The technique uses iPP grades of high molecular weight and high isotacticity and produces a mixture of ␣ and ␥-phase crystal