Nuclear Magnetic Resonance Study of Molecular Motions in Poly(γ-n-alkyl L-glutamate)s
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概要
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The temperature dependence of the NMR line-width and second moment of poly(γ-n-alkyl L-glutamate)s having methyl, ethyl, n-propyl, and n-butyl groups were measured at temperatures ranging from -150℃ to 150℃. Three motional narrowing processes were found and are ascribed to the motions of the main chain (the α-process), the side chain as a whole (the β-process), and part of the side chain (the γ-process). The correlation spectra for the β-process in these samples were determined, and the shapes of the spectra were compared with each other, with those of the dielectric-relaxation spectra of the same samples, and with those of the dielectric-relaxation spectra of the β-process in poly(n-alkyl methacrylate)s caused by the motion of similar side chains. It is shown that the shapes of these spectra are the same irrespective of the difference in side-chain length and in main-chain conformation.
- 社団法人応用物理学会の論文
- 1986-02-20
著者
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Kakizaki Maeko
Department Of Applied Physics Faculty Of Engineering Hokkaido University
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Hideshima Teruo
Department Of Applied Physics Faculty Of Engineering Hokkaido University
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KATSURA Toshihiko
Department of Applied Physics, Faculty of Engineering, Hokkaido University
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Katsura Toshihiko
Department Of Applied Physics Faculty Of Engineering Hokkaido University
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