2026-09-22T17:59:01Z https://www.ideals.illinois.edu/oai-pmh

oai:www.ideals.illinois.edu:2142/117696 2023-07-11 col_2142_5131 col_2142_14789 com_2142_5130 com_2142_14788 com_2142_8903

Moore, Jeffrey S. 2022-12 application/pdf en text Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2023-04-12 without embargo terms The student, Aliza Yazdani, accepted the attached license on 2022-07-14 at 16:23. The student, Aliza Yazdani, submitted this Thesis for approval on 2022-07-14 at 16:32. This Thesis was approved for publication on 2022-07-22 at 14:57. DSpace SAF Submission Ingestion Package generated from Vireo submission #18319 on 2023-04-12 at 07:22:47 Dual-component systems for storable frontal ring-opening metathesis polymerization resins Yazdani, Aliza N. 2022-07-22 Polymerization FROMP thermosets polymers Frontal ring-opening metathesis polymerization (FROMP) with Grubbs-type Ru catalysts allows for the rapid and energetically efficient production of structural polymers. Applications for these polymers often require long periods of time during which the resins are stored or transported prior to polymerization. As such, the ideal catalytic system for the FROMP of these resins remains inactive for extended periods of time until the purposeful initiation of polymerization. However, the high reactivity exhibited by most conventional FROMP catalysts often leads to premature polymerization at ambient temperatures within mere hours or days. In this work, we examined a thermally latent bis-N-heterocyclic carbene Ru complex which had high reactivity upon thermal initiation but only after activation by a Cu(I) co-reagent. Without the presence of Cu, the resins remained in liquid-state for up to 8 weeks. We examined over 40 dual-component formulations for the FROMP of dicyclopentadiene. Polymerization parameters, resin stability, and polymer properties were investigated for each formulation and statistical analysis was performed to provide insight into trends and correlations within the system. Interestingly, we found that with excess Cu relative to Ru, the reaction fronts were colder and slower. Mechanistic studies showed that excess Cu inhibited the system during both catalyst activation and polymerization. Thesis eng https://hdl.handle.net/2142/117696 Copyright 2022 Aliza N. Yazdani M.S. Thesis Chemistry University of Illinois at Urbana-Champaign Chemistry