Structural arrest and dynamic localization in biocolloidal gels
(2017) In Soft Matter 13(26). p.4629-4635- Abstract
Casein micelles interacting via an entropic intermediate-ranged depletion attraction exhibit a fluid-to-gel transition due to arrested spinodal decomposition. The bicontinuous networked structure of the gel freezes shortly after formation. We determine the timescales of structural arrest from the build-up of network rigidity after pre-shear rejuvenation, and find that the arrest time as well as the plateau elastic modulus of the gel diverge as a function of the volume fraction and interaction potential. Moreover, we show using scaling from naïve mode coupling theory that their mechanical properties are dictated by their microscopic dynamics rather than their heterogeneous large scale structure.
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https://lup.lub.lu.se/record/8accf52c-ec2f-4f9e-9e7f-54c3cd752b8f
- author
- Mahmoudi, N. LU and Stradner, A. LU
- organization
- publishing date
- 2017
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Soft Matter
- volume
- 13
- issue
- 26
- pages
- 7 pages
- publisher
- Royal Society of Chemistry
- external identifiers
-
- pmid:28613330
- wos:000411436600009
- scopus:85022037021
- ISSN
- 1744-683X
- DOI
- 10.1039/c7sm00496f
- language
- English
- LU publication?
- yes
- id
- 8accf52c-ec2f-4f9e-9e7f-54c3cd752b8f
- date added to LUP
- 2017-07-25 07:00:26
- date last changed
- 2025-01-07 17:39:10
@article{8accf52c-ec2f-4f9e-9e7f-54c3cd752b8f,
abstract = {{<p>Casein micelles interacting via an entropic intermediate-ranged depletion attraction exhibit a fluid-to-gel transition due to arrested spinodal decomposition. The bicontinuous networked structure of the gel freezes shortly after formation. We determine the timescales of structural arrest from the build-up of network rigidity after pre-shear rejuvenation, and find that the arrest time as well as the plateau elastic modulus of the gel diverge as a function of the volume fraction and interaction potential. Moreover, we show using scaling from naïve mode coupling theory that their mechanical properties are dictated by their microscopic dynamics rather than their heterogeneous large scale structure.</p>}},
author = {{Mahmoudi, N. and Stradner, A.}},
issn = {{1744-683X}},
language = {{eng}},
number = {{26}},
pages = {{4629--4635}},
publisher = {{Royal Society of Chemistry}},
series = {{Soft Matter}},
title = {{Structural arrest and dynamic localization in biocolloidal gels}},
url = {{http://dx.doi.org/10.1039/c7sm00496f}},
doi = {{10.1039/c7sm00496f}},
volume = {{13}},
year = {{2017}},
}