NDLI: Droplet relaxation in blends with one viscoelastic component: bulk and confined conditions

Content Provider	Springer Nature Link
Author	Cardinaels, Ruth Moldenaers, Paula
Copyright Year	2010
Abstract	Using a counter rotating parallel plate shear flow cell, the shape relaxation of deformed droplets in a quiescent matrix is studied microscopically. Both the effects of geometrical confinement and component viscoelasticity are systematically explored at viscosity ratios of 0.45 and 1.5. The flow conditions are varied from a rather low to a nearly critical Ca number. Under all conditions investigated, viscoelasticity of the droplet phase has no influence on shape relaxation, whereas matrix viscoelasticity and geometrical confinement result in a slower droplet retraction. Up to high confinement ratios, the relaxation curves for ellipsoidal droplets can be superposed onto a master curve. Confined droplets with a sigmoidal shape relax in two stages: the first consists of a shape change to an ellipsoid with a limited amount of retraction, and the second is the retraction of this ellipsoid. The latter stage can be described by means of one single relaxation time that can be obtained from the relaxation of initially ellipsoidal droplets. The experimental results are compared to the predictions of a recently published phenomenological model for droplet dynamics in confined systems with viscoelastic components (Minale et al., Langmuir 26:126–132, 2010). However, whereas the model predicts additive effects of geometrical confinement and component viscoelasticity, the experimental data reveal more complex interactions.
Starting Page	941
Ending Page	951
Page Count	11
File Format	PDF
ISSN	00354511
Journal	Rheologica Acta
Volume Number	49
Issue Number	9
e-ISSN	14351528
Language	English
Publisher	Springer-Verlag
Publisher Date	2010-05-20
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Single droplet dynamics Shape relaxation Viscoelasticity Confinement Minale model Food Science Polymer Sciences Characterization and Evaluation of Materials Mechanical Engineering Soft and Granular Matter, Complex Fluids and Microfluidics
Content Type	Text
Resource Type	Article
Subject	Mechanics of Materials Condensed Matter Physics Materials Science

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

Droplet dynamics in sub-critical complex flows

Role of droplet bridging on the stability of particle-containing immiscible polymer blends

Modeling confinement in polymer nanocomposites from linear viscoelasticity data

Modeling the linear viscoelastic behavior of asphaltite-modified bitumens

Theoretical and experimental study on the motion and shape of viscoelastic falling drops through Newtonian media

Microsecond relaxation processes in shear and extensional flows of weakly elastic polymer solutions

Equibiaxial extension of a viscoelastic partially extending strand convection model with large relaxation time

Large Deborah number flows around confined microfluidic cylinders

Mesoscopic modeling of viscoelastic diffusion and flow into immiscible polymeric blends

Droplet relaxation in blends with one viscoelastic component: bulk and confined conditions

Similar Documents

Droplet dynamics in sub-critical complex flows

Role of droplet bridging on the stability of particle-containing immiscible polymer blends

Modeling confinement in polymer nanocomposites from linear viscoelasticity data

Modeling the linear viscoelastic behavior of asphaltite-modified bitumens

Theoretical and experimental study on the motion and shape of viscoelastic falling drops through Newtonian media

Microsecond relaxation processes in shear and extensional flows of weakly elastic polymer solutions

Equibiaxial extension of a viscoelastic partially extending strand convection model with large relaxation time

Large Deborah number flows around confined microfluidic cylinders

Mesoscopic modeling of viscoelastic diffusion and flow into immiscible polymeric blends

Droplet relaxation in blends with one viscoelastic component: bulk and confined conditions