H
Hayaka Fukuzumi
Researcher at University of Tokyo
Publications - 20
Citations - 6154
Hayaka Fukuzumi is an academic researcher from University of Tokyo. The author has contributed to research in topics: Cellulose & Oxidized cellulose. The author has an hindex of 17, co-authored 20 publications receiving 5161 citations.
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Journal ArticleDOI
TEMPO-oxidized cellulose nanofibers
TL;DR: The new cellulose-based nanofibers formed by size reduction process of native cellulose fibers by TEMPO-mediated oxidation have potential application as environmentally friendly and new bio- based nanomaterials in high-tech fields.
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Transparent and high gas barrier films of cellulose nanofibers prepared by TEMPO-mediated oxidation.
TL;DR: The T OCN films prepared from softwood cellulose were transparent and flexible and had extremely low coefficients of thermal expansion caused by high crystallinity of TOCN, which is promising for potential applications in some high-tech materials.
Journal ArticleDOI
Individualization of Nano-Sized Plant Cellulose Fibrils by Direct Surface Carboxylation Using TEMPO Catalyst under Neutral Conditions
Tsuguyuki Saito,Masayuki Hirota,Naoyuki Tamura,Satoshi Kimura,Hayaka Fukuzumi,Laurent Heux,Akira Isogai +6 more
TL;DR: Solid-state (13)C NMR and X-ray analyses revealed that the C6 carboxylate groups formed are selectively present on the crystalline fibril surfaces at high densities.
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Preparation and characterization of TEMPO-oxidized cellulose nanofibril films with free carboxyl groups
TL;DR: In this article, a 2,2,6,6-tetramehylpiperidine-1-oxy radical (TEMPO)-oxidized wood cellulose with free carboxyl groups (TOCN-COOH) was completely converted to individual TEMPO-oxidised cellulose nanofibrils with free carbon-oxyl groups, dispersed in water at pH 4.6.
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Thermal stabilization of TEMPO-oxidized cellulose
TL;DR: In this article, a partially C6-carboxylated cellulose with carboxylate content of 1.68mmol/g was prepared by 2,2,6,6-tetramethylpiperidine-1-oxyl radical (TEMPO)-mediated oxidation of a softwood bleached kraft pulp.