dc.contributor.advisor | Swager, Timothy M. | |
dc.contributor.advisor | Smith, Zachary P. | |
dc.contributor.author | Storme, Kayla R. | |
dc.date.accessioned | 2025-01-23T17:20:19Z | |
dc.date.available | 2025-01-23T17:20:19Z | |
dc.date.issued | 2024-02 | |
dc.date.submitted | 2024-12-23T19:44:10.358Z | |
dc.identifier.uri | https://hdl.handle.net/1721.1/158058 | |
dc.description.abstract | In Chapter 1, we investigate the influence of side-chain length and dispersity in ring-opening metathesis polymerization (ROMP) polymers with pore-generating side chains. Macromonomers with four discrete monodispersities are separated and polymerized to produce bottlebrush polymers with monodisperse side chains. Each bottlebrush polymer is fabricated into a free-standing film. Pure-gas experiments are performed to explore the impact of dispersity and side chain length on gas separation performance.
In Chapter 2, we evaluate the mixed-gas performance of a class of bottlebrush polymers described in Chapter 1. Gas sorption, diffusion, and CO₂-induced plasticization are reported. Competitive sorption effects are studied using 50:50 mixture of CO₂/CH₄. Separation performance at different compositions of CO₂/CH₄ is also explored.
In Chapter 3, we incorporate nitrile functionality into the structure of a family of polymers with rigid, porogenic side chains described in Chapters 1 and 2. Statistical and block copolymers are synthesized to demonstrate the role of grafting density on separation performance and CO₂ plasticization resistance. Sorption experiments are performed to determine improvements to selectivity.
In Chapter 4, we describe the optimized SN Ar synthesis of a poly(arylene ether) (PAE) that produces high molecular weight polymers. The synthesis of an analogous PAE with C-H functionality instead of C-F is also reported. Porosity and free volume are investigated in both PAEs. Separation performance is characterized and compared to other polymers with similar structural motifs. | |
dc.publisher | Massachusetts Institute of Technology | |
dc.rights | In Copyright - Educational Use Permitted | |
dc.rights | Copyright retained by author(s) | |
dc.rights.uri | https://rightsstatements.org/page/InC-EDU/1.0/ | |
dc.title | Designing Microporous Polymers for Separations | |
dc.type | Thesis | |
dc.description.degree | Ph.D. | |
dc.contributor.department | Massachusetts Institute of Technology. Department of Chemistry | |
mit.thesis.degree | Doctoral | |
thesis.degree.name | Doctor of Philosophy | |