Extensional flow induced coalescence in polymer blends

0189390 - UMCH-V 20033345 RIV DE eng J - Journal Article
Fortelný, Ivan - Živný, Antonín
Extensional flow induced coalescence in polymer blends.
Rheologica Acta. Roč. 42, č. 5 (2003), s. 454-461. ISSN 0035-4511. E-ISSN 1435-1528
R&D Projects: GA ČR GA106/99/0555; GA AV ČR IAA4050007
Institutional research plan: CEZ:AV0Z4050913
Keywords : polymer blends * coalescence * extensional flow
Subject RIV: CF - Physical ; Theoretical Chemistry
Impact factor: 1.548, year: 2003

The theories derived for the description of shear-flow- induced coalescence in polymer blends were modified for coalescence induced by extensional flow. It was shown that the shape of the dependence of probability, P_c, that the collision of droplets will be followed by their fusion, on the droplet size is similar for coalescence induced by shear and extensional flow. It was found that dependence of P_c on the droplet radius contains a part related to hydrodynamic interaction between spherical droplets, which is not described by the modification of Janssen's and Elmendorp's theories.
Permanent Link: http://hdl.handle.net/11104/0085202