Deformation of liquid-filled calcium alginate capsules in a spinning drop apparatus.
@article{Leick2010DeformationOL,
title={Deformation of liquid-filled calcium alginate capsules in a spinning drop apparatus.},
author={Sabine Leick and S. Henning and Patrick Degen and Dieter Suter and Heinz Rehage},
journal={Physical chemistry chemical physics : PCCP},
year={2010},
volume={12 12},
pages={
2950-8
}
}This paper describes the mechanical properties of thin-walled, liquid-filled calcium alginate capsules by measuring the deformation of these particles in a spinning drop apparatus. By variation of the guluronic acid content of the alginate, the polymerization time and the calcium and alginate concentration we systematically studied the elastic properties of these capsules. In a series of experiments we observed for the first time new types of irreversibly deformed capsules, which can be…
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References
SHOWING 1-10 OF 31 REFERENCES
Deformation of a Capsule in a Spinning Drop Apparatus
- Materials Science
- 1998
Abstract This paper studies the rheological properties of ultrathin aminomethacrylate membranes that are synthesized at the interface between oil and water. We have measured the kinetics of the…
Experimental studies of the deformation of a synthetic capsule in extensional flow
- Engineering
- 1993
Experiments are described to study the motion and deformation of a synthetic, liquid-filled capsule that is freely suspended in hyperbolic extensional flow. The capsule is a composite particle…
Mechanical Stability of Ionotropic Alginate Beads
- Materials Science
- 2009
Abstract In a series of experiments we measured the mechanical properties of single alginate beads by means of squeezing experiments between two parallel plates. We used multivalent counter-ions as…
Shear-induced deformations of polyamide microcapsules
- Engineering
- 2000
Abstract The application of microcapsules for technical, cosmetic and pharmaceutical purposes has attracted increased interest in recent years. The design of new capsule types requires a profound…
Gelation conditions and transport properties of hollow calcium alginate capsules
- Materials Science, ChemistryBiotechnology and bioengineering
- 2004
The diameter, membrane thickness, and compression intensity of hollow Ca‐alginate capsules were measured at different gelation conditions, such as the reactant concentration, dropping velocity, and…
Mechanical Properties of Microcapsules Used in a Self-Healing Polymer
- Engineering
- 2006
The elastic modulus and failure behavior of poly(urea-formaldehyde) shelled microcapsules were determined through single-capsule compression tests. Capsules were tested both dry and immersed in a…
Identification of the elastic properties of an artificial capsule membrane with the compression test: effect of thickness.
- EngineeringJournal of colloid and interface science
- 2006
Compression of a capsule: mechanical laws of membranes with negligible bending stiffness.
- EngineeringPhysical review. E, Statistical, nonlinear, and soft matter physics
- 2004
The compression of a capsule between two plates is considered and it is shown that the isotropic dilation plays the major role and an asymptotic behavior independent of the shear modulus is found for large deformations.
Compression of biocompatible liquid-filled HSA-alginate capsules: determination of the membrane mechanical properties.
- Engineering, BiologyBiotechnology and bioengineering
- 2003
Compression experiments between two parallel plates are performed on a series of biocompatible HSA-alginate capsules with two different membrane thicknesses to identify plausible constitutive laws for the membrane material.
















