13C NMR relaxation of poly(acrylic acid) in aqueous solution. Effects of charge density on local chain dynamics

Shinichi Yamazaki; Ichiro Noda; Akihiro Tsutsumi

doi:10.1295/polymj.32.87

¹³C NMR relaxation of poly(acrylic acid) in aqueous solution. Effects of charge density on local chain dynamics

Shinichi Yamazaki, Ichiro Noda, Akihiro Tsutsumi

Research output: Contribution to journal › Article › peer-review

4 Citations (Scopus)

Abstract

Spin-lattice relaxation time and nuclear Overhauser effect of polyacrylic acid with different degree of neutralization at two magnetic fields were measured as a function of temperature. The main chains were analyzed by Dejean-Laupretre-Monnerie (DLM) model to study the effects of charge density on the local chain dynamics. The activation energy, E*, associated with a potential barrier for conformational transition was examined. E* was evaluated by subtracting the activation energy of solvent viscosity from the apparent activation energy. The mechanisms of local motion as reflected in the correlation function were independent of temperature.

Original language	English
Pages (from-to)	87-89
Number of pages	3
Journal	Polymer Journal
Volume	32
Issue number	1
DOIs	https://doi.org/10.1295/polymj.32.87
Publication status	Published - 2000
Externally published	Yes

ASJC Scopus subject areas

Polymers and Plastics
Materials Chemistry

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abstract = "Spin-lattice relaxation time and nuclear Overhauser effect of polyacrylic acid with different degree of neutralization at two magnetic fields were measured as a function of temperature. The main chains were analyzed by Dejean-Laupretre-Monnerie (DLM) model to study the effects of charge density on the local chain dynamics. The activation energy, E*, associated with a potential barrier for conformational transition was examined. E* was evaluated by subtracting the activation energy of solvent viscosity from the apparent activation energy. The mechanisms of local motion as reflected in the correlation function were independent of temperature.",

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AU - Yamazaki, Shinichi

AU - Noda, Ichiro

AU - Tsutsumi, Akihiro

PY - 2000

Y1 - 2000

N2 - Spin-lattice relaxation time and nuclear Overhauser effect of polyacrylic acid with different degree of neutralization at two magnetic fields were measured as a function of temperature. The main chains were analyzed by Dejean-Laupretre-Monnerie (DLM) model to study the effects of charge density on the local chain dynamics. The activation energy, E*, associated with a potential barrier for conformational transition was examined. E* was evaluated by subtracting the activation energy of solvent viscosity from the apparent activation energy. The mechanisms of local motion as reflected in the correlation function were independent of temperature.

AB - Spin-lattice relaxation time and nuclear Overhauser effect of polyacrylic acid with different degree of neutralization at two magnetic fields were measured as a function of temperature. The main chains were analyzed by Dejean-Laupretre-Monnerie (DLM) model to study the effects of charge density on the local chain dynamics. The activation energy, E*, associated with a potential barrier for conformational transition was examined. E* was evaluated by subtracting the activation energy of solvent viscosity from the apparent activation energy. The mechanisms of local motion as reflected in the correlation function were independent of temperature.

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¹³C NMR relaxation of poly(acrylic acid) in aqueous solution. Effects of charge density on local chain dynamics

Abstract

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