Preparation and Rheological Characterization of Imogolite Hydrogels
Joint Authors
Obata, Akiko
Maeda, Hirotaka
Inukai, Keiichi
Fujikura, Kie
Kasuga, Toshihiro
Kato, Katsuya
Source
Issue
Vol. 2014, Issue 2014 (31 Dec. 2014), pp.1-7, 7 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2014-07-23
Country of Publication
Egypt
No. of Pages
7
Main Subjects
Abstract EN
Imogolite, one of the aluminium silicates, has a nanotube structure and has been known to form gel under alkaline condition.
Imogolite nanotubes were synthesized in an acidic solution with various tube lengths by controlling the aging time from 1 d to 14 d.
The length of the nanotubes grew from 100 nm to several μm as the aging time.
Pure imogolite hydrogels were prepared by applying a salting-out method and centrifugation from its dispersed solutions with various tube lengths and solution pH.
Imogolite hydrogel can be classified as the physically cross-linked one; the structure of the gel network is considered to be the entanglements and hydrogen bonding among nanotubes.
The theoretical water contents of the prepared hydrogels were calculated as ∼99.7% in average.
Gelation percentage significantly increased as the length of imogolite nanotubes.
Whereas hydrogel prepared from 4 d aging sample showed the highest storage modulus of ∼970 Pa, it was found that the hydrogel could be prepared in the pH range from 6 to 10.
The gel strength reached the highest value of 1000 Pa when the gel was prepared from the imogolite dispersed solution of pH 8.
It could be explained by the surface charge variation of the imogolite.
American Psychological Association (APA)
Fujikura, Kie& Maeda, Hirotaka& Obata, Akiko& Inukai, Keiichi& Kato, Katsuya& Kasuga, Toshihiro. 2014. Preparation and Rheological Characterization of Imogolite Hydrogels. Journal of Nanomaterials،Vol. 2014, no. 2014, pp.1-7.
https://search.emarefa.net/detail/BIM-1041843
Modern Language Association (MLA)
Fujikura, Kie…[et al.]. Preparation and Rheological Characterization of Imogolite Hydrogels. Journal of Nanomaterials No. 2014 (2014), pp.1-7.
https://search.emarefa.net/detail/BIM-1041843
American Medical Association (AMA)
Fujikura, Kie& Maeda, Hirotaka& Obata, Akiko& Inukai, Keiichi& Kato, Katsuya& Kasuga, Toshihiro. Preparation and Rheological Characterization of Imogolite Hydrogels. Journal of Nanomaterials. 2014. Vol. 2014, no. 2014, pp.1-7.
https://search.emarefa.net/detail/BIM-1041843
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1041843