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Swelling-state-dependent structure of spread microgel monolayers

Kratzenberg, T. ; Gerelli, Y. ; Gutfreund, P. ; Sánchez-Puga, P. ; Petrunin, A. V. ; Richtering, W. ; Thompson, B. R. and Scotti, A. LU orcid (2026) In Journal of Colloid and Interface Science 718.
Abstract

Albeit largely studied, the interfacial restructuring that governs emulsion breakdown remains poorly understood. Here, we use neutron reflectometry to probe the structure of thermo-responsive microgel monolayers formed either above the volume phase transition temperature or collapsed in situ after adsorption. We find that the thermal history of the microgel critically affects the monolayer architecture, particularly the particle protrusion into the air phase. These insights reveal a pathway-dependent mechanism that governs microgel behavior at interfaces, underpinning the design of next-generation responsive emulsions and interfacial materials.

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author
; ; ; ; ; ; and
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Interfacial structure, Microgels, Neutron reflectometry, Stimuli-responsive colloids
in
Journal of Colloid and Interface Science
volume
718
article number
140434
publisher
Academic Press
external identifiers
  • pmid:41980528
  • scopus:105035402456
ISSN
0021-9797
DOI
10.1016/j.jcis.2026.140434
language
English
LU publication?
yes
id
ff6d672b-e4db-43b9-b417-650133a107c0
date added to LUP
2026-06-08 15:54:44
date last changed
2026-09-30 15:15:26
@article{ff6d672b-e4db-43b9-b417-650133a107c0,
  abstract     = {{<p>Albeit largely studied, the interfacial restructuring that governs emulsion breakdown remains poorly understood. Here, we use neutron reflectometry to probe the structure of thermo-responsive microgel monolayers formed either above the volume phase transition temperature or collapsed in situ after adsorption. We find that the thermal history of the microgel critically affects the monolayer architecture, particularly the particle protrusion into the air phase. These insights reveal a pathway-dependent mechanism that governs microgel behavior at interfaces, underpinning the design of next-generation responsive emulsions and interfacial materials.</p>}},
  author       = {{Kratzenberg, T. and Gerelli, Y. and Gutfreund, P. and Sánchez-Puga, P. and Petrunin, A. V. and Richtering, W. and Thompson, B. R. and Scotti, A.}},
  issn         = {{0021-9797}},
  keywords     = {{Interfacial structure; Microgels; Neutron reflectometry; Stimuli-responsive colloids}},
  language     = {{eng}},
  month        = {{09}},
  publisher    = {{Academic Press}},
  series       = {{Journal of Colloid and Interface Science}},
  title        = {{Swelling-state-dependent structure of spread microgel monolayers}},
  url          = {{http://dx.doi.org/10.1016/j.jcis.2026.140434}},
  doi          = {{10.1016/j.jcis.2026.140434}},
  volume       = {{718}},
  year         = {{2026}},
}