Rheological scaling and modeling of shear-enhanced crystallization rate of polypropylene
β Scribed by Qing Chen; Yurun Fan; Qiang Zheng
- Book ID
- 106070646
- Publisher
- Springer-Verlag
- Year
- 2006
- Tongue
- English
- Weight
- 335 KB
- Volume
- 46
- Category
- Article
- ISSN
- 0035-4511
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π SIMILAR VOLUMES
The isothermal crystallization of isotactic polypropylenes has been studied under static conditions and under shear Γ½ow. The shear was induced by displacement of a glass ΓΌbre in the molten polymer. An a-monoclinic crystalline phase was formed with a columnar organization at the surface of the glass
The mechanical properties of polypropylene depend critically on the crystallizability of the chains, which depends in turn on their stereochemical structures. These dependences were investigated using Monte Carlo methods to generate chains having various stereochemical sequences and then scrutinizin