Crystallization Kinetics of Polypropylene/Ethylene-Octene Copolymer Blends

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F70883521%3A28110%2F09%3A63508038" target="_blank" >RIV/70883521:28110/09:63508038 - isvavai.cz</a>
Result on the web
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DOI - Digital Object Identifier
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Result language
angličtina
Original language name
Crystallization Kinetics of Polypropylene/Ethylene-Octene Copolymer Blends
Original language description
Blends of polypropylene and ethylene-octene copolymers (EOC) were investigated by transmission electron microscopy, optical microscopy and DSC. The main focus was on phase morphology and crystallization for blends containing EOC with different octene content (28, 37 and 52 wt.%). Also, for a given octene content (37 wt.%), the effect of molecular weight (115, 180, 229k) of EOC on morphology was observed. The largest particles were found in the blend with EOC-28 and the smallest with EOC-52. This blend with the smallest particles exhibits the fastest crystallization kinetics by two independent methods, optical microscopy and DSC. This behavior was explained by a model. Crystallizing PP lamellae have to travel longer distance going around large particleswhich slows down overall crystallization growth rate. In the case of smaller particles, the obstacles are smaller and the crystallization is faster.
Czech name
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Czech description
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Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
CD - Macromolecular chemistry
OECD FORD branch
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Publication year
2009
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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