NDLI: Scaling law behaviour of the retraction of a Newtonian droplet after a strain jump in a Newtonian matrix

Content Provider	Springer Nature Link
Author	Assighaou, Souad Benyahia, Lazhar
Copyright Year	2010
Abstract	We performed 3D visualisation of a Newtonian droplet embedded in an immiscible Newtonian liquid after a strain jump with a home-built counter-rotating shear device. The use of different linear polyurethanes for the droplet liquid allowed us to cover almost three decades of viscosity ratios (K) and to obtain a distinct interface with PDMS matrices with the same interfacial tension for all droplet/matrix pairs. During the droplet retraction, the major axis (L) showed universal time dependence. The apparent Hencky strain of L decayed linearly at large deformations and exponentially at small deformations. After large strain steps, the droplet axis along the vorticity direction (W) deflated and then inflated and the time dependence could be well described by a log normal function. The full width at half maximum was proportional to the droplet relaxation time for all K. The amplitude and the position of the minimum of W were proportional to the affine deformation. The results revealed interesting scaling law behaviour of the droplet retraction after large strain jumps.
Starting Page	677
Ending Page	686
Page Count	10
File Format	PDF
ISSN	00354511
Journal	Rheologica Acta
Volume Number	49
Issue Number	6
e-ISSN	14351528
Language	English
Publisher	Springer-Verlag
Publisher Date	2010-01-19
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Drop deformation Emulsion Retraction Relaxation Blend Strain jump 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

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