著者
師岡 淳郎 則元 京
出版者
社団法人 繊維学会
雑誌
繊維学会誌 (ISSN:00379875)
巻号頁・発行日
vol.47, no.7, pp.328-333, 1991
被引用文献数
4

In accordance with the newly developed homogeneous periodate oxidation procedure, we prepared high cleavage level 2, 3-dialcohol cellulose (DAC) which gives off a clear and transparent film. Viscoelastic properties of DAC were investigated in relation to those of cellulose. Dynamic mechanical measurements for DAC at 110Hz over the temperature range from -150&deg;C to 150&deg;C revealed two kinds of relaxation processes, which were respectively centered around -70&deg;C and 112&deg;C. The first process at -70&deg;C was related to dielectric relaxion, and was regarded to be, similar to the process in cellulose, due to the motion of methylol groups. On the other hand, the cleavage of C<sub>2</sub>-C<sub>3</sub> bonds of the glucopyranose ring resulted in the process at around 112&deg;C, while no comparable process has been reported for cellulose in the similar region. This process was ascribed to the micro- Brownian motion along the main chain. From the temperature variation of the stress-elongation diagrams, the glass transition temperature Tg for DAC was estimated to be about 80&deg;C. The DAC film above Tg showed a marked elongation reaching 200% at 112&deg;C.

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こんな論文どうですか? 均一過ヨウ素酸酸化によって得られたジアルコールセルロースの粘弾性(師岡 淳郎ほか),1991 https://t.co/YnUgPWzwHd In accordance with the newly developed ho…
こんな論文どうですか? 均一過ヨウ素酸酸化によって得られたジアルコールセルロースの粘弾性(師岡 淳郎ほか),1991 https://t.co/YnUgPWzwHd In accordance with the newly developed ho…

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