Blended solutions of celluloses from different biological origins

Daisuke Tatsumi, Nobutake Tamai, Masahiro Yanagisawa, Takayoshi Matsumoto

研究成果: Chapter in Book/Report/Conference proceedingConference contribution

抄録

Solution properties of celluloses from different biological origins were investigated in terms of rheological properties in 8 wt% LiCl/amide solutions. The solution viscosities were proportional to the α-th power of the polymer concentrations. The exponent, α, was 3, 4, and 7.5 for the solution from bacterial, wood and cotton, and tunicate cellulose in the semi-dilute regions, respectively. These celluloses were blended to get solutions having various molecular weights and molecular distributions of the polymer. The high molecular weight component, tunicate cellulose: M w=4.13×106, had remarkable effect on the long-time region of the viscoelastic functions of the blends. The weight fraction dependence of the zero-shear viscosity of the blends can be expressed by a linear mixing relation based on Ninomiya theory. The zero-shear viscosities of the blends are proportional to the 5/2-th power of the weight-average molecular weight calculated from a linear combination of that of each component. This indicates that the zero-shear viscosity of the cellulose blends depends strongly on the molecular weight and scarcely on the molecular distribution.

本文言語英語
ホスト出版物のタイトルThe XVth International Congress on Rheology - The Society of Rheology 80th Annual Meeting
ページ633-635
ページ数3
DOI
出版ステータス出版済み - 9 11 2008
イベント15th International Congress on Rheology - Monterey, CA, 米国
継続期間: 8 3 20088 8 2008

出版物シリーズ

名前AIP Conference Proceedings
1027
ISSN(印刷版)0094-243X
ISSN(電子版)1551-7616

その他

その他15th International Congress on Rheology
国/地域米国
CityMonterey, CA
Period8/3/088/8/08

All Science Journal Classification (ASJC) codes

  • 物理学および天文学(全般)

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