eprintid: 10193940
rev_number: 9
eprint_status: archive
userid: 699
dir: disk0/10/19/39/40
datestamp: 2024-07-01 11:45:32
lastmod: 2024-12-09 12:19:28
status_changed: 2024-07-01 11:45:32
type: article
metadata_visibility: show
sword_depositor: 699
creators_name: Migliozzi, Simona
creators_name: He, Yiting
creators_name: Angeli, Panagiota
creators_name: Lan, Yang
title: Enhancing interfacial elasticity via supramolecular microgel assembly for improved Pickering emulsions stability
ispublished: pub
divisions: UCL
divisions: B04
divisions: C05
divisions: F43
keywords: Pickering emulsions, Microgel-laden interfaces, Supramolecular host-guest complexes, Interfacial rheology
note: This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions.
abstract: We propose a new method to improve the interfacial elasticity of microgel-stabilised Pickering emulsions (PEs) by introducing supramolecular host-guest interactions to promote clustering among microgel particles. To this aim, microgels based on poly(N-isopropylacrylamide) (pNIPAM) are modified with 1-benzyl-3-vinylimidazolium bromide (BVI) to create pNIPAM-co-BVI microgels (MG). Cucurbit[8]uril (CB[8]) are introduced to form supramo-lecular BVI/CB[8] host-guest complexes. The introduction of CB[8] affects microgel spatial distribution at the interface of Pickering droplets, promoting the formation of monolayers of microgel clusters. These structures alter the interfacial viscoelasticity of the microgel monolayers, enhancing the resistance of (MG+CB[8])-stabilised interfaces to lateral and dilational deformations. PEs stabilised by microgels with the presence of CB[8] host-guest interactions exhibit improved stability over time. These results show the possibility of tuning the interfacial properties of microgel-laden interfaces by introducing supramolecular ternary complexes that can solely alter the interparticle interactions among microgels without significantly changing their morphology and deformability at the interface, thus providing a new route for improved emulsion stabilisation.
date: 2024-10-20
date_type: published
publisher: Elsevier
official_url: http://dx.doi.org/10.1016/j.colsurfa.2024.134538
full_text_type: other
language: eng
verified: verified_manual
elements_id: 2290664
doi: 10.1016/j.colsurfa.2024.134538
lyricists_name: Lan, Yang
lyricists_name: Angeli, Panagiota
lyricists_name: Migliozzi, Simona
lyricists_id: YLANX71
lyricists_id: PANGE44
lyricists_id: SMIGL19
actors_name: Flynn, Bernadette
actors_id: BFFLY94
actors_role: owner
full_text_status: restricted
publication: Colloids and Surfaces A: Physicochemical and Engineering Aspects
volume: 699
article_number: 134538
issn: 0927-7757
citation:        Migliozzi, Simona;    He, Yiting;    Angeli, Panagiota;    Lan, Yang;      (2024)    Enhancing interfacial elasticity via supramolecular microgel assembly for improved Pickering emulsions stability.                   Colloids and Surfaces A: Physicochemical and Engineering Aspects , 699     , Article 134538.  10.1016/j.colsurfa.2024.134538 <https://doi.org/10.1016/j.colsurfa.2024.134538>.      
 
document_url: https://discovery.ucl.ac.uk/id/eprint/10193940/1/1-s2.0-S092777572401402X-main.pdf