Swelling of micro-hydrogels with a crosslinker gradient
Boon, Niels LU and Schurtenberger, Peter LU
(2017)
In Physical Chemistry Chemical Physics
19(35).
p.23740-23746
- Abstract
A heterogeneous distribution of crosslinker in micro-hydrogels (microgels) results in a non-uniform polymer density inside the particles. Identifying the morphology of the hydrogel backbone enables a bottom-up approach towards the structural and rheological properties of microgel systems. On a local level we use a Flory-Rehner inspired model that focuses on highly swollen networks, characterized by a Poisson's ratio of 1/4. Our ab initio calculations take account for the nonuniform distribution of crosslinker species during the synthesis of poly(N-isopropylacylamide) (PNIPAM) microgels, yet the method is also applicable to other microgel architectures. We recover a single-particle density profile that is in close agreement with SAXS... (More)
A heterogeneous distribution of crosslinker in micro-hydrogels (microgels) results in a non-uniform polymer density inside the particles. Identifying the morphology of the hydrogel backbone enables a bottom-up approach towards the structural and rheological properties of microgel systems. On a local level we use a Flory-Rehner inspired model that focuses on highly swollen networks, characterized by a Poisson's ratio of 1/4. Our ab initio calculations take account for the nonuniform distribution of crosslinker species during the synthesis of poly(N-isopropylacylamide) (PNIPAM) microgels, yet the method is also applicable to other microgel architectures. We recover a single-particle density profile that is in close agreement with SAXS data. Comparison with experimental data confirms that the surface of the cross-linked particle is decorated with dangling polymers ends of considerable size.
(Less)
- author
- Boon, Niels
LU
and Schurtenberger, Peter
LU
- organization
- publishing date
- 2017
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Physical Chemistry Chemical Physics
- volume
- 19
- issue
- 35
- pages
- 7 pages
- publisher
- Royal Society of Chemistry
- external identifiers
-
- scopus:85029444447
- pmid:28607971
- wos:000410585900016
- ISSN
- 1463-9076
- DOI
- 10.1039/c7cp02434g
- language
- English
- LU publication?
- yes
- id
- 8b943402-9da6-408f-a05d-6a4539a7fa4e
- date added to LUP
- 2017-10-04 10:23:52
- date last changed
- 2024-02-29 23:02:05
@article{8b943402-9da6-408f-a05d-6a4539a7fa4e,
abstract = {{<p>A heterogeneous distribution of crosslinker in micro-hydrogels (microgels) results in a non-uniform polymer density inside the particles. Identifying the morphology of the hydrogel backbone enables a bottom-up approach towards the structural and rheological properties of microgel systems. On a local level we use a Flory-Rehner inspired model that focuses on highly swollen networks, characterized by a Poisson's ratio of 1/4. Our ab initio calculations take account for the nonuniform distribution of crosslinker species during the synthesis of poly(N-isopropylacylamide) (PNIPAM) microgels, yet the method is also applicable to other microgel architectures. We recover a single-particle density profile that is in close agreement with SAXS data. Comparison with experimental data confirms that the surface of the cross-linked particle is decorated with dangling polymers ends of considerable size.</p>}},
author = {{Boon, Niels and Schurtenberger, Peter}},
issn = {{1463-9076}},
language = {{eng}},
number = {{35}},
pages = {{23740--23746}},
publisher = {{Royal Society of Chemistry}},
series = {{Physical Chemistry Chemical Physics}},
title = {{Swelling of micro-hydrogels with a crosslinker gradient}},
url = {{http://dx.doi.org/10.1039/c7cp02434g}},
doi = {{10.1039/c7cp02434g}},
volume = {{19}},
year = {{2017}},
}