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Unraveling the structure-rheology relationship of chemically modified polyketones through the Paal-Knorr reaction at various conversion degrees
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DOI：10.1016/j.mtchem.2026.103926.png)
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Abstract
En 中文
• Paal-Knorr functionalization enables precise structure-rheology tuning of alternating aliphatic polyketones. • HSQC, 1H NMR, and 13C NMR confirm the formation of pyrrole-based units along the modified polyketone backbone. • Flexible aliphatic side chains promote chain relaxation and melt processability for potential extrusion or injection molding. • Rigid pendant groups induce strong supramolecular interactions and gel-like behaviour for potential structural materials.
Keywords:
Alternating polyketones
Paal-Knorr reaction
Rheology
Linear viscosity
Master curves
Storages modulus
Loss modulus
Polymer chemistry
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6.7
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3.6K
Citations:
1.4W
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