Mechanism of poly(N-isopropylacrylamide) cononsolvency in aqueous methanol solutions explored via oxygen K-edge X-ray absorption spectroscopy.
Phys Chem Chem Phys
; 26(18): 13634-13638, 2024 May 08.
Article
em En
| MEDLINE
| ID: mdl-38685819
ABSTRACT
The cononsolvency mechanism of poly(N-isopropylacrylamide) (PNIPAM), dissolving in pure methanol (MeOH) and water (H2O) but being insoluble in MeOH-H2O mixtures, was investigated by O K-edge X-ray absorption spectroscopy (XAS). The cononsolvency emerges from the aggregation of PNIPAM with MeOH clusters, leading to the collapse of the hydrophobic hydration of PNIPAM.
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MEDLINE
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En
Ano de publicação:
2024
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Article