Deswelling behaviour of ionic microgel particles from low to ultra-high densities
Nöjd, Sofi LU ; Holmqvist, Peter LU ; Boon, Niels LU ; Obiols-Rabasa, Marc LU ; Mohanty, Priti S. LU ; Schweins, Ralf and Schurtenberger, Peter LU
(2018)
In Soft Matter
14(20).
p.4150-4159
- Abstract
The swelling of ionic microgel particles is investigated at a wide range of concentrations using a combination of light, X-ray and neutron scattering techniques. We employ a zero-average contrast approach for small-angle neutron scattering experiments, which enables a direct determination of the form factor at high concentrations. The observed particle size initially decreases strongly with the particle concentration in the dilute regime but approaches a constant value at intermediate concentrations. This is followed by a further deswelling at high concentrations above particle overlap. Theory and experiments point at a pivotal contribution of dangling polymer ends to the strong variation in size of ionic microgels, which presents... (More)
The swelling of ionic microgel particles is investigated at a wide range of concentrations using a combination of light, X-ray and neutron scattering techniques. We employ a zero-average contrast approach for small-angle neutron scattering experiments, which enables a direct determination of the form factor at high concentrations. The observed particle size initially decreases strongly with the particle concentration in the dilute regime but approaches a constant value at intermediate concentrations. This is followed by a further deswelling at high concentrations above particle overlap. Theory and experiments point at a pivotal contribution of dangling polymer ends to the strong variation in size of ionic microgels, which presents itself mainly through the hydrodynamics properties of the system.
(Less)
- author
- Nöjd, Sofi
LU
; Holmqvist, Peter
LU
; Boon, Niels
LU
; Obiols-Rabasa, Marc
LU
; Mohanty, Priti S.
LU
; Schweins, Ralf
and Schurtenberger, Peter
LU
- organization
- publishing date
- 2018-01-01
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Soft Matter
- volume
- 14
- issue
- 20
- pages
- 10 pages
- publisher
- Royal Society of Chemistry
- external identifiers
-
- pmid:29744516
- scopus:85047491901
- ISSN
- 1744-683X
- DOI
- 10.1039/c8sm00390d
- language
- English
- LU publication?
- yes
- id
- 35927932-5e1d-4d4d-a91a-61b8a02c1c28
- date added to LUP
- 2018-06-07 10:11:42
- date last changed
- 2024-06-11 16:20:44
@article{35927932-5e1d-4d4d-a91a-61b8a02c1c28,
abstract = {{<p>The swelling of ionic microgel particles is investigated at a wide range of concentrations using a combination of light, X-ray and neutron scattering techniques. We employ a zero-average contrast approach for small-angle neutron scattering experiments, which enables a direct determination of the form factor at high concentrations. The observed particle size initially decreases strongly with the particle concentration in the dilute regime but approaches a constant value at intermediate concentrations. This is followed by a further deswelling at high concentrations above particle overlap. Theory and experiments point at a pivotal contribution of dangling polymer ends to the strong variation in size of ionic microgels, which presents itself mainly through the hydrodynamics properties of the system.</p>}},
author = {{Nöjd, Sofi and Holmqvist, Peter and Boon, Niels and Obiols-Rabasa, Marc and Mohanty, Priti S. and Schweins, Ralf and Schurtenberger, Peter}},
issn = {{1744-683X}},
language = {{eng}},
month = {{01}},
number = {{20}},
pages = {{4150--4159}},
publisher = {{Royal Society of Chemistry}},
series = {{Soft Matter}},
title = {{Deswelling behaviour of ionic microgel particles from low to ultra-high densities}},
url = {{http://dx.doi.org/10.1039/c8sm00390d}},
doi = {{10.1039/c8sm00390d}},
volume = {{14}},
year = {{2018}},
}