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