Determination of dynamic surface tension and viscosity of non-Newtonian fluids from drop oscillations
SCIE
SCOPUS
- Title
- Determination of dynamic surface tension and viscosity of non-Newtonian fluids from drop oscillations
- Authors
- Yang, LS; Kazmierski, BK; Hoath, SD; Jung, S; Hsiao, WK; Wang, YW; Berson, A; Harlen, O; Kapur, N; Bain, CD
- Date Issued
- 2014-11
- Publisher
- Americal Institute of Physics
- Abstract
- The oscillations of free-falling drops with size range from p1 to mu 1 have been used to measure the transient shear viscosity and the dynamic surface tension of shear-thinning fluids on the timescale of 10(-5)-10(-2) s. The method is first validated with Newtonian fluids. For a given surface tension, the lower and upper limits for accurate measurement of the viscosity are determined as a function of drop size. The dynamic properties of two types of shear-thinning fluids with varying viscoelasticity are reported: aqueous suspensions of the antifungal drug griseofulvin and of the organic light-emitting diode material poly(3,4-ethylenedioxythiophene): polystyrenesulphonate. In both cases, the free-falling drop retains the high-shear viscosity. (C) 2014 AIP Publishing LLC.
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/12559
- DOI
- 10.1063/1.4901823
- ISSN
- 1070-6631
- Article Type
- Article
- Citation
- PHYSICS OF FLUIDS, vol. 26, no. 11, page. 113103, 2014-11
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