Academic Journal
Polymers of intrinsic microporosity containing aryl-phthalimide moieties: synthesis, modeling, and membrane gas transport properties
| العنوان: | Polymers of intrinsic microporosity containing aryl-phthalimide moieties: synthesis, modeling, and membrane gas transport properties |
|---|---|
| المؤلفون: | Rodríguez-González, Fidel E., Montero-Alejo, Ana L., Escalona, Néstor, Schott, Eduardo, Comesaña Gándara, Bibiana, Terraza, Claudio A., Tundidor-Camba, Alain, Soto Guzmán, Marvelia Cenit, Palacio Martínez, Laura |
| بيانات النشر: | The Royal Society of Chemistry |
| سنة النشر: | 2023 |
| المجموعة: | UVaDOC - Repositorio Documental de la Universidad de Valladolid |
| الوصف: | Producción Científica ; High-performance polymers for membrane gas separation require the careful design of the structure-porous relationship. In this work, five phthalimide-based polymers of intrinsic microporosity (PIMs) were obtained via the double nucleophilic aromatic substitution with the commercially available 5,5′,6,6′-tetrahydroxy-3,3,3′,3′-tetramethylspirobisindane (TTSBI) monomer. The phthalimide monomers were synthesized considering different sizes and positions of the alkyl-substituents to evaluate their influence on the physical properties of the polymers and their potential use as gas separation membranes. Four polymers were soluble in the low-boiling solvents chloroform and tetrahydrofuran, facilitating the casting of self-standing films to evaluate their gas separation properties. The thermally stable membranes showed 5% weight lost between 537 °C and 549 °C. As powders, these four polymers showed apparent BET surface areas ranging from 434 to 661 m2 g−1. The experimental BET surface areas correlated with those obtained by molecular simulation models of the synthesized polymers. A linear function is proposed as a tool to predict, with a known uncertainty, the surface area values of this type of polymer from the corresponding computational models. As a trend, increasing the volume of the ortho-substituent in the aryl-phthalimide group increases the permeability of the membranes, reaching generally better performances than Matrimid® and close to those of PIM-1, considering their place on the Robeson diagrams of the O2/N2, CO2/CH4 and CO2/N2 gas pairs. Aging studies between 63 and 122 days showed a decrease in permeability, accompanied by the typical increase in selectivity that tends to move the data parallel to the upper Robeson limits. ; Agencia Nacional de Investigación y Desarrollo (ANID) by Fondecyt project number 1190772. Universidad de Valladolid, proyecto PROYEMER-2021-05. MCIN/AEI/10.13039/501100011033 and “European Union NextGenerationEU/PRTR”, Grant TED2021-131170A-I00. ... |
| نوع الوثيقة: | article in journal/newspaper |
| وصف الملف: | application/pdf |
| اللغة: | English |
| تدمد: | 1759-9954 1759-9962 |
| Relation: | https://doi.org/10.1039/D2PY01584F; Polym. Chem., 2023, 14, 2363-2373; https://uvadoc.uva.es/handle/10324/65417; 2363; 19; 2373; Polymer Chemistry; 14 |
| DOI: | 10.1039/d2py01584f |
| الاتاحة: | https://uvadoc.uva.es/handle/10324/65417 https://doi.org/10.1039/d2py01584f |
| Rights: | Attribution-NonCommercial-NoDerivatives 4.0 Internacional ; info:eu-repo/semantics/openAccess ; http://creativecommons.org/licenses/by-nc-nd/4.0/ ; This journal is © The Royal Society of Chemistry 2023 |
| رقم الانضمام: | edsbas.B65B87E2 |
| قاعدة البيانات: | BASE |
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