Crystallization Behavior of Isotactic Propylene−Ethylene and Propylene−Butene Copolymers: Effect of Comonomers versus Stereodefects on Crystallization Properties of Isotactic Polypropylene
✍ Scribed by De Rosa, Claudio; Auriemma, Finizia; de Ballesteros, Odda Ruiz; Resconi, Luigi; Camurati, Isabella
- Book ID
- 120014073
- Publisher
- American Chemical Society
- Year
- 2007
- Tongue
- English
- Weight
- 573 KB
- Volume
- 40
- Category
- Article
- ISSN
- 0024-9297
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Miscibility for blends of isotactic polypropylene (PP) and ethylene-D4-propylene random copolymer (EPR)s, which were prepared by copolymerization of propylene and 19 mol% (D-EPR19) and 47 mol% (D-EPR47) of perdeuterated ethylene with metallocene catalyst and then fractionated with a preparative GPC,
The crystallization and morphology of reactor-made blends of isotactic polypropylene ( PP ) with a large content of ethylene -propylene rubber ( EPR ) (i.e., ú 50%) were investigated. In the blends, PP was found to form spherulites during the crystallization process, with the growth rate constant un