Controlling the morphology of microgels by ionic stimuli
Bergman, Maxime J. LU ; Pedersen, Jan S. ; Schurtenberger, Peter LU
and Boon, Niels
LU
(2020)
In Soft Matter
16(11).
p.2786-2794
- Abstract
Stimuli-responsive microgels have attracted much interest for their use as vehicles for drug delivery or as the building blocks of adaptive materials. Ionic microgel particles, including popular poly(NIPAM-co-acrylic acid), show strong mechanical responsiveness to many external stimuli, including changes in ionic strength or acidity. In this work, we demonstrate that combining multiple ionic stimuli can enable detailed control over the morphology of microgels. To this extent, we analyze the particle morphology in various surroundings with light-scattering techniques. First, we find strong indications of an inverted density profile in the core of the particles. Secondly, we show that the swelling of this hydrogel core and the corona of... (More)
Stimuli-responsive microgels have attracted much interest for their use as vehicles for drug delivery or as the building blocks of adaptive materials. Ionic microgel particles, including popular poly(NIPAM-co-acrylic acid), show strong mechanical responsiveness to many external stimuli, including changes in ionic strength or acidity. In this work, we demonstrate that combining multiple ionic stimuli can enable detailed control over the morphology of microgels. To this extent, we analyze the particle morphology in various surroundings with light-scattering techniques. First, we find strong indications of an inverted density profile in the core of the particles. Secondly, we show that the swelling of this hydrogel core and the corona of dangling polymer ends can be targeted separately by a combination of deionization and deprotonation steps. Hence, this work represents an advance in tailoring particle morphologies after synthesis in a predictable fashion.
(Less)
- author
- Bergman, Maxime J.
LU
; Pedersen, Jan S.
; Schurtenberger, Peter
LU
and Boon, Niels
LU
- organization
- publishing date
- 2020
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Soft Matter
- volume
- 16
- issue
- 11
- pages
- 9 pages
- publisher
- Royal Society of Chemistry
- external identifiers
-
- scopus:85082098449
- pmid:32104825
- ISSN
- 1744-683X
- DOI
- 10.1039/c9sm02170a
- language
- English
- LU publication?
- yes
- id
- b0e1e29e-1335-4617-9d20-64b829ad0803
- date added to LUP
- 2020-04-03 10:50:09
- date last changed
- 2024-05-01 07:27:37
@article{b0e1e29e-1335-4617-9d20-64b829ad0803,
abstract = {{<p>Stimuli-responsive microgels have attracted much interest for their use as vehicles for drug delivery or as the building blocks of adaptive materials. Ionic microgel particles, including popular poly(NIPAM-co-acrylic acid), show strong mechanical responsiveness to many external stimuli, including changes in ionic strength or acidity. In this work, we demonstrate that combining multiple ionic stimuli can enable detailed control over the morphology of microgels. To this extent, we analyze the particle morphology in various surroundings with light-scattering techniques. First, we find strong indications of an inverted density profile in the core of the particles. Secondly, we show that the swelling of this hydrogel core and the corona of dangling polymer ends can be targeted separately by a combination of deionization and deprotonation steps. Hence, this work represents an advance in tailoring particle morphologies after synthesis in a predictable fashion.</p>}},
author = {{Bergman, Maxime J. and Pedersen, Jan S. and Schurtenberger, Peter and Boon, Niels}},
issn = {{1744-683X}},
language = {{eng}},
number = {{11}},
pages = {{2786--2794}},
publisher = {{Royal Society of Chemistry}},
series = {{Soft Matter}},
title = {{Controlling the morphology of microgels by ionic stimuli}},
url = {{http://dx.doi.org/10.1039/c9sm02170a}},
doi = {{10.1039/c9sm02170a}},
volume = {{16}},
year = {{2020}},
}