Poroelasticity of cellulose hydrogel

被引：11

作者：

Isobe, Noriyuki ^{[1
,2
]}

Kimura, Satoshi ^{[2
,4
]}

Wada, Masahisa ^{[3
,4
]}

Deguchi, Shigeru ^{[1
]}

机构：

[1] Japan Agcy Marine Earth Sci & Technol JAMSTEC, R&D Ctr Marine Biosci, 2-15 Natsushima Cho, Yokosuka, Kanagawa 2370061, Japan

[2] Univ Tokyo, Grad Sch Agr & Life Sci, Dept Biomat Sci, Bunkyo Ku, Yayoi 1-1-1, Tokyo 1138657, Japan

[3] Kyoto Univ, Grad Sch Agr, Div Forest & Biomat Sci, Sakyo Ku, Kyoto 6068502, Japan

[4] Kyung Hee Univ, Coll Life Sci, Dept Plant & Environm New Resources, 1732 Deogyeong Daero, Yongin 446701, Gyeonggi Do, South Korea

来源：

JOURNAL OF THE TAIWAN INSTITUTE OF CHEMICAL ENGINEERS | 2018年 / 92卷

基金：

日本学术振兴会;

关键词：

Cellulose; Hydrogel; Poroelasticity; Porosity; Compression test; Fluid mechanics; DISSOLUTION; RELAXATION; AEROGELS;

D O I：

10.1016/j.jtice.2018.02.017

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

The poroelasticity of cellulose hydrogels was studied by a series of compression tests. The stiffness of the cellulose hydrogel was found to be independent on the crystallinity of a skeletal gel matrix, suggesting that the poroelasticity made a significant contribution to mechanical properties of the hydrogel. Indeed, typical poroelastic responses were observed when the cellulose hydrogels were subjected to the compression tests with varied compression strain rates (i.e. softness upon slow compression but stiffness upon fast compression). The fluid mechanics theory showed that sub-micrometer-scale morphological difference of the gel matrix, which was observable by scanning electron microscopy, affected the flow behavior of water inside porous structure, leading to the increased stiffness upon fast compression. (C) 2018 Taiwan Institute of Chemical Engineers. Published by Elsevier B.V. All rights reserved.

引用

页码：118 / 122

页数：5

共 33 条

[11]

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[12] Aerocellulose: New highly porous cellulose prepared from cellulose-NaOH aqueous solutions [J].