High-pressure crystallization of isotactic polypropylene droplets
β Scribed by Kinga Zapala, Ewa Piorkowska, Anne Hiltner, Eric Baer
- Book ID
- 120795378
- Publisher
- Springer
- Year
- 2012
- Weight
- 665 KB
- Volume
- 290
- Category
- Article
- ISSN
- 0340-255X
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## Abstract The nonβparallel chain structure determined for Ξ³βphase isotactic polypropylene (Ξ³βiPP) 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 β₯-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 β£ and β₯-phase crystal