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Prediction of average droplet size in flowing immiscible polymer blends

SYSNO ASEP	0475233
Document Type	J - Journal Article
R&D Document Type	Journal Article
Subsidiary J	Článek ve WOS
Title	Prediction of average droplet size in flowing immiscible polymer blends
Author(s)	Fortelný, Ivan (UMCH-V)_RID Jůza, Josef (UMCH-V)_{RID, ORCID}
Article number	45250
Source Title	Journal of Applied Polymer Science. - : Wiley - ISSN 0021-8995 Roč. 134, č. 35 (2017), s. 1-12
Number of pages	12 s.
Language	eng - English
Country	US - United States
Keywords	coalescence ; droplet breakup ; phase structure evolution
Subject RIV	CD - Macromolecular Chemistry
OECD category	Polymer science
R&D Projects	GA14-17921S GA ČR - Czech Science Foundation (CSF)
Institutional support	UMCH-V - RVO:61389013
UT WOS	000403346000017
EID SCOPUS	85020430786
DOI	10.1002/app.45250
Annotation	The paper is focused on calculation of the average droplet size in immiscible blends during their steady flow. Available theoretical and experimental results of studies of the droplet breakup and coalescence are utilized to derive the equations describing dynamic equilibrium between the droplet breakup and coalescence. New expression for the coalescence efficiency, reliably reflecting recent theoretical results, is proposed. The equation for the average steady droplet size, controlled by the stepwise breakup mechanism and coalescence of droplets with not very different sizes, is derived for blends containing up to 10–20 vol % of the droplets. For blends with above approximate 20 vol % of the droplets, the breakup by the Tomotika mechanism and coalescence in highly polydisperse system is modeled. Results of the derived equations are compared with experimental data. Qualitative agreement is found for the dependence of the droplet size on the amount of the dispersed phase.
Workplace	Institute of Macromolecular Chemistry
Contact	Eva Čechová, cechova@imc.cas.cz ; Tel.: 296 809 358
Year of Publishing	2018

Number of the records: 1