アクセス数 : ?
ダウンロード数 : ?
ID 115499
著者
Kondo, H. Shikoku Kakouki
キーワード
cellulose
aerogel
nanofiber
composite
資料タイプ
学術雑誌論文
抄録
Aerogels are highly porous solids formed by replacing the liquid in a gel by air, without changing the original structure. The present cellulose aerogels are made by sublimating the water from a colloidal suspension of cellulose nanofibers. The nanofibers form three-dimensional networks, crosslinked by hydrogen bonds bridging the surface hydroxyl groups and also by mechanical entanglements between nanofibers. Although the studies on aerogels from cellulose nanofiber hydrogels by freeze drying reported so far had produced small samples, improved cooling techniques that produces larger samples were attempted and the obtained cellulose nanofiber aerogels were impregnated with epoxy resin to fabricate composites. The highly porous structure allowed complete impregnation of resin and translucent composites were produced. The modulus of composites was increased in relation to neat epoxy, but due to high brittleness the ultimate strength was decreased. This is likely caused by nanofiber agglomerations of uneven pore sizes acting as stress concentrators. The evaluation of the mechanical properties of composites serves as an indirect way to assess the quality of the aerogels produced.
掲載誌名
Journal of Reinforced Plastics and Composites
ISSN
07316844
15307964
cat書誌ID
AA10628734
出版者
SAGE Publications
32
20
開始ページ
1547
終了ページ
1552
発行日
2013-06-20
権利情報
AN Nakagaito, H Kondo, H Takagi, Cellulose nanofiber aerogel production and applications, Journal of Reinforced Plastics and Composites (Volume: 32 issue: 20) pp. 1547-1552. Copyright © 2013 SAGE Publications. DOI: 10.1177/0731684413494110.
EDB ID
出版社版DOI
出版社版URL
フルテキストファイル
言語
eng
著者版フラグ
著者版
部局
理工学系