Applied rheology for understanding flow instabilities in production of polymeric films and nanofibers

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F70883521%3A28110%2F18%3A63520667" target="_blank" >RIV/70883521:28110/18:63520667 - 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
Applied rheology for understanding flow instabilities in production of polymeric films and nanofibers
Original language description
Due to the fact that polymer melts behave as non-Newtonian viscoelastic fluids, their flow behavior is rather complex and leads to number of flow phenomena which have negative impact on their processing and final product properties. The polymer melt elasticity, high shear viscosity, extensional viscosity and its tendency to slip at the solid surfaces causes the flow destabilization. Typical flow instabilities occurring during production of polymeric films and nanofibers are die drool, neck-in, dog-bone effect, draw resonance, interfacial instabilities in coextrusion as well as number of instabilities occurring in melt blowing technology such whipping, extrudate breakup, flies, shots, jam and melt spraying. In this work, it is demonstrated how the polymer melt rheology and modeling of polymer processing can be used to understand and minimize some of above mentioned flow instabilities.
Czech name
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Czech description
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Project
<a href="/en/project/GA16-05886S" target="_blank" >GA16-05886S: Investigation the effect of polymer melt shear and elongational rheology on production stability of meltblown nanofibers and films</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2018
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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