Proton magnetic resonance study of poly(p-chlorostyrene) of low molecular weight.
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概要
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Poly(<I>p</I>-chlorostyrne) samples of relatively low molecular weight (average degrees of polymerization (‾DP): 15, 24, and 46) were prepared by radical polymerization and their PMR spectra were observed in the temperature range 5–88 °C. When the temperature was elevated, the absorption of the methyne proton moved to lower field and the half height width for the absorption of the <I>ortho</I> proton decreased more remarkably than that of the <I>meta</I> proton. The absorption of the <I>ortho</I> proton of one polymer sample (‾DP: 15) showed an anomalous broadening. These features of the observed spectra were interpreted in terms of ring current shielding by aromatic side groups, and the conformations of the polymer are discussed.
- 公益社団法人 日本化学会の論文
著者
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Imamura Yoshio
Department of Chemistry, Faculty of Science, Science University of Tokyo
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Imamura Yoshio
Department of Applied Chemistry, Faculty of Science, Science University of Tokyo
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Hirai Yoshiyuki
Department of Chemistry, Faculty of Science, Science University of Tokyo
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Nunomura Yoshio
Department of Chemistry, Faculty of Science, Science University of Tokyo
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