High Molecular Weight and High Melt Strength PP Blends Foaming

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F70883521%3A28110%2F12%3A43869376" target="_blank" >RIV/70883521:28110/12:43869376 - isvavai.cz</a>
Alternative codes found
RIV/70883521:28610/12:43869376
Result on the web
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DOI - Digital Object Identifier
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Result language
angličtina
Original language name
High Molecular Weight and High Melt Strength PP Blends Foaming
Original language description
Generally, morphology of polymer foams represented by bubble size and density is influenced by properties of source material and processing condition. Rheological property is one of a key factor in foaming process which can be changed by processing condition as well as material modification. In this study, polypropylene (PP) having high molecular weight was physical blended with high melt strength grade using a twin screw extruder. The elongational viscosity of tested materials was measured out on extensional rheometer. PP foams were prepared in high pressure vessel using supercritical carbon dioxide (SC-CO2) as a blowing agent. Various blends were foamed under different temperatures and constant pressure controlled by high pressure pump. The morphology of foam was investigated using scanning electron microscope (SEM). The results show that PP foam structures were influenced by the modification of source materials as well as foaming conditions and the strain hardening behavior is more
Czech name
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Czech description
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Project
<a href="/en/project/ED2.1.00%2F03.0111" target="_blank" >ED2.1.00/03.0111: Centre of Polymer Systems</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2012
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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