Polymer solubility mechanism in ionic liquids: H-NMR spectra and two-parameter hydrogen bonding analysis

Understanding the polymer solubility in ionic liquids (ILs) is important for polymer processing or polymeric material preparation. Previously, two-parameter H-bonding analysis has been proposed to clarify that polymer solubility in ILs is dominated by H-bonding interactions (Y. F. Yuan et al. , Phys...

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Published in:Physical chemistry chemical physics : PCCP 2024-06, Vol.26 (24), p.16942-16946
Main Authors: Du, Ming-Xuan, Yuan, Ya-Fei, Zhang, Jin-Ming, Liu, Jia-Jian, Liu, Chen-Yang
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Summary:Understanding the polymer solubility in ionic liquids (ILs) is important for polymer processing or polymeric material preparation. Previously, two-parameter H-bonding analysis has been proposed to clarify that polymer solubility in ILs is dominated by H-bonding interactions (Y. F. Yuan et al. , Phys. Chem. Chem. Phys. , 2021, 23 , 21893-21900). In the present work, 1 H-NMR spectra are adopted to characterize the H-bonding interactions between polymers and ILs, which provide a microscopic relation between polymer solubility and two-parameter H-bonding analysis. In the present work, δ H2 was used as a probe to characterize the H-bonding interactions between polymers and ILs. The change of δ H2 exhibits a good correlation with polymer solubility.
ISSN:1463-9076
1463-9084
DOI:10.1039/d4cp01703j