Properties of hydrated poly(2-methoxyethyl acrylate) observed by 13C-nuclear magnetic resonance spectroscopy

It is well-known that poly(2-methoxyethyl acrylate) (PMEA) exhibits excellent blood compatibility and various investigations have examined the underlying mechanism of this compatibility in terms of the water structure in PMEA and/or inherent PMEA properties. However, information regarding the dynami...

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Bibliographic Details
Published in:International journal of polymer analysis & characterization 2023-08, Vol.28 (5), p.523-535
Main Authors: Mochizuki, Akira, Miwa, Yuko, Yahata, Chie, Saito, Haruyo, Oda, Yoshiki
Format: Article
Language:English
Subjects:
C-NMR
Chain mobility
Chemical equilibrium
chemical shift
Compatibility
Hydration
Magnetic properties
Molecular structure
NMR spectroscopy
Poly(2-methoxyethyl acrylate)
polymer dynamics
Polymethoxyethyl acrylate
relaxation time
Spin-lattice relaxation
Water chemistry
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Summary:It is well-known that poly(2-methoxyethyl acrylate) (PMEA) exhibits excellent blood compatibility and various investigations have examined the underlying mechanism of this compatibility in terms of the water structure in PMEA and/or inherent PMEA properties. However, information regarding the dynamic properties of the PMEA remains limited. This study was performed to clarify the effect of water molecules on the structure and dynamic properties of hydrated PMEA by comparing dry PMEA using temperature-variable 13 C nuclear magnetic resonance spectroscopy ( 13 C-NMR) with a solution probe at 15 -45 °C. Hydration changed the chemical shift values of the four carbons in the PMEA side chain (− C OO C H 2 C H 2 O C H 3 ). Investigations of spin-lattice relaxation times and resonance peak widths showed that hydration increased PMEA mobility and the side chain mobility markedly changed at approximately 30 °C, especially in dry PMEA.
ISSN:1023-666X
1563-5341
DOI:10.1080/1023666X.2023.2248709