Relaxation Spectroscopy of the Mechanical β-Relaxation in Poly(n-alkyl methacrylate)s in Glassy State by Stress Relaxation Measurements
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概要
- 論文の詳細を見る
The validity of the time-temperature reducibility and the similarity between the mechanical and dielectric relaxations were examined in the case of the β-relaxation due to motion of the side chains in polymethyl, polyethyl and poly-n-propyl methacrylates by stress relaxation measurements. The shear relaxation modules was measured from 5 sec to 900 sec in the temperature range from ca. -110℃ to ca. 30℃. Using these data, it is shown that the time-temperature reducibility is valid for the β-relaxation in the glassy state below a certain critical temperature, and that activation energy and shape of the relaxation spectrum are independent of side-chain length while relaxation strength is proportional to the number of side chains in unit volume as in the case of the dielectric β-relaxation. The applicability of the two-site model is also examined.
- 社団法人応用物理学会の論文
- 1986-03-20
著者
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Murata Kazutaka
Department Of Applied Physics Faculty Of Engineering Hokkaido University
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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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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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- Relaxation Spectroscopy of the Mechanical β-Relaxation in Poly(n-alkyl methacrylate)s in Glassy State by Stress Relaxation Measurements
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