{"id":{"repo_id":"uiuc","oai_identifier":"oai:www.ideals.illinois.edu:2142/122187"},"canonical_url":"https://search.dev.ndltd.org/etd/uiuc/oai:www.ideals.illinois.edu:2142/122187","repository":{"repo_id":"uiuc","name":"University of Illinois - Urbana-Champaign","base_url":"https://www.ideals.illinois.edu/oai-pmh"},"display":{"title":"Tunable latency by catalyst encapsulation for silicone crosslinking","abstract":"Submission published under a 24 month embargo labeled 'Closed Access', the embargo will last until 2025-05-01","abstract_html":"Submission published under a 24 month embargo labeled &#x27;Closed Access&#x27;, the embargo will last until 2025-05-01","abstract_has_math":false,"creators":["Miller, Susannah"],"institution":"University of Illinois at Urbana-Champaign","degree_name":"Ph.D.","degree_level":"Dissertation","degree_discipline":"Chemical Engineering","degree_department":null,"school":null,"contributors":["Guironnet, Damien S","Rogers, Simon A","Peters, Baron G","Fout, Alison R"],"advisors":[],"committee_chairs":[],"committee_members":[],"year":2023,"date_issued":"2023-05","date_published":"2023-05","updated_at":"2026-07-22T22:25:00Z","subjects":["Catalyst Encapsulation","Hydrosilylation","Immobilized Catalyst","Latency"],"languages":["en","eng"],"rights":["Copyright 2023 Susannah Miller"],"rights_urls":[],"identifier_entries":[]},"links":{"outbound_url":"https://hdl.handle.net/2142/122187","outbound_label":"Handle","outbound_source":"dc:identifier"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor","label":"Contributor","values":["Guironnet, Damien S","Rogers, Simon A","Peters, Baron G","Fout, Alison R"]},{"key":"dc:creator","label":"Author","values":["Miller, Susannah"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date","label":"Dc Date","values":["2023-05","2023-04-21"]},{"key":"dc:type","label":"Dc Type","values":["text","Thesis"]},{"key":"thesis:degree_discipline","label":"Discipline","values":["Chemical Engineering"]},{"key":"thesis:degree_level","label":"Degree Level","values":["Dissertation"]},{"key":"thesis:degree_name","label":"Degree Name","values":["Ph.D."]},{"key":"thesis:institution_name","label":"Thesis Institution Name","values":["University of Illinois at Urbana-Champaign"]}]},{"id":"subjects_keywords","label":"Subjects and Keywords","entries":[{"key":"dc:subject","label":"Dc Subject","values":["Catalyst Encapsulation","Hydrosilylation","Immobilized Catalyst","Latency"]}]},{"id":"language_rights","label":"Language and Rights","entries":[{"key":"dc:language","label":"Dc Language","values":["en","eng"]},{"key":"dc:rights","label":"Dc Rights","values":["Copyright 2023 Susannah Miller"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier","label":"Identifier","values":["https://hdl.handle.net/2142/122187"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description","label":"Description","values":["Submission published under a 24 month embargo labeled 'Closed Access', the embargo will last until 2025-05-01","The student, Susannah Miller, accepted the attached license on 2023-04-20 at 11:47.","The student, Susannah Miller, submitted this Dissertation for approval on 2023-04-20 at 12:04.","This Dissertation was approved for publication on 2023-04-21 at 11:47.","DSpace SAF Submission Ingestion Package generated from Vireo submission #19065 on 2024-03-01 at 13:47:32","Catalyst encapsulation serves as a prominent means of enabling one-pot storage of crosslinkable silicone formulations with highly active, Pt-based hydrosilylation catalysts. Numerous approaches towards encapsulation of Pt-based hydrosilylation catalysts have been developed in the patent literature, but the challenge remains to achieve triggered catalyst release under mild heating conditions (< 100 °C) and minimal encapsulant loading while still maintaining robust storage stability (6 months at 25 °C) with no premature curing of the silicone formulation. Our work addresses these goals in two approaches. The first involves immobilizing Pt catalyst to functionalized silica nanoparticles to decrease diffusion of catalyst through its encapsulant and extend the shelf life of one-part crosslinkable silicone formulation, particularly for encapsulants of low glass transition or melting temperatures. We find that coordinating molecular platinum to silica nanoparticles functionalized with a high density of Pt-coordinating norbornene ligands causes unexpected latency of the catalytic activity in hydrosilylation reactions when compared to an identical reaction in which the norbornene is not tethered. We demonstrate that this latency is related to ligand density on the particle surface, chemical structure of the norbornene, and silica nanoparticle topology."]},{"key":"dc:format","label":"Dc Format","values":["application/pdf"]},{"key":"dc:title","label":"Title","values":["Tunable latency by catalyst encapsulation for silicone crosslinking"]}]}],"canonical_facts":{"dc:contributor":["Guironnet, Damien S","Rogers, Simon A","Peters, Baron G","Fout, Alison R"],"dc:creator":["Miller, Susannah"],"dc:date":["2023-05","2023-04-21"],"dc:description":["Submission published under a 24 month embargo labeled 'Closed Access', the embargo will last until 2025-05-01","The student, Susannah Miller, accepted the attached license on 2023-04-20 at 11:47.","The student, Susannah Miller, submitted this Dissertation for approval on 2023-04-20 at 12:04.","This Dissertation was approved for publication on 2023-04-21 at 11:47.","DSpace SAF Submission Ingestion Package generated from Vireo submission #19065 on 2024-03-01 at 13:47:32","Catalyst encapsulation serves as a prominent means of enabling one-pot storage of crosslinkable silicone formulations with highly active, Pt-based hydrosilylation catalysts. Numerous approaches towards encapsulation of Pt-based hydrosilylation catalysts have been developed in the patent literature, but the challenge remains to achieve triggered catalyst release under mild heating conditions (< 100 °C) and minimal encapsulant loading while still maintaining robust storage stability (6 months at 25 °C) with no premature curing of the silicone formulation. Our work addresses these goals in two approaches. The first involves immobilizing Pt catalyst to functionalized silica nanoparticles to decrease diffusion of catalyst through its encapsulant and extend the shelf life of one-part crosslinkable silicone formulation, particularly for encapsulants of low glass transition or melting temperatures. We find that coordinating molecular platinum to silica nanoparticles functionalized with a high density of Pt-coordinating norbornene ligands causes unexpected latency of the catalytic activity in hydrosilylation reactions when compared to an identical reaction in which the norbornene is not tethered. We demonstrate that this latency is related to ligand density on the particle surface, chemical structure of the norbornene, and silica nanoparticle topology."],"dc:format":["application/pdf"],"dc:identifier":["https://hdl.handle.net/2142/122187"],"dc:language":["en","eng"],"dc:rights":["Copyright 2023 Susannah Miller"],"dc:subject":["Catalyst Encapsulation","Hydrosilylation","Immobilized Catalyst","Latency"],"dc:title":["Tunable latency by catalyst encapsulation for silicone crosslinking"],"dc:type":["text","Thesis"],"thesis:degree_discipline":["Chemical Engineering"],"thesis:degree_level":["Dissertation"],"thesis:degree_name":["Ph.D."],"thesis:institution_name":["University of Illinois at Urbana-Champaign"]},"updated_at":"2026-07-22T22:25:00Z"}