Dynamic Cross-Linking of Catalytically Synthesized Poly(Aminonorbornenes)
| Autor: | Nirmalendu Kuanr, Mitchell R. Perry, Evelyne Van Ruymbeke, Tanja Tomkovic, Damon J. Gilmour, Laurel L. Schafer, Savvas G. Hatzikiriakos, Shou-Jen Hsiang |
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| Přispěvatelé: | UCL - SST/IMCN - Institute of Condensed Matter and Nanosciences |
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
Materials science
Polymers and Plastics Organic Chemistry 02 engineering and technology ROMP 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences Combinatorial chemistry 0104 chemical sciences Inorganic Chemistry Materials Chemistry Ring-opening metathesis polymerisation 0210 nano-technology |
| Zdroj: | Macromolecules, Vol. 53, no.7, p. 2649-2661 (2020) |
| Popis: | Amine-functionalized polymeric materials have a wide variety of applications; however, the preparation of these materials is often plagued by laborious, multistep synthetic routes. Herein, a modified and improved synthetic protocol utilizes the hydroaminoalkylation reaction to catalytically assemble aminefunctionalized monomers on a gram scale with 100% atom economy. Combined with ring-opening metathesis polymerization (ROMP), amine-functionalized polymers with varying electronic properties have been synthesized. Extensive rheological characterizations show that modification of the electronic properties of the amine substituent influences the bulk material properties through modification of hydrogen bonding and π-stacking interactions to afford dynamic cross-linking within the polymeric material. Tertiary amine-containing polymers display distinct rheological properties that differ from those of polymers with pendant hydrogen-bond-donating secondary amines. The profound viscoelastic effects that result from the incorporation of tunable dynamic interactions are presented. |
| Databáze: | OpenAIRE |
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