Results 261 to 270 of about 76,543 (284)

Cellulose Nanofibers Prepared by TEMPO-Mediated Oxidation of Native Cellulose

Biomacromolecules, 2007
Never-dried and once-dried hardwood celluloses were oxidized by a 2,2,6,6-tetramethylpiperidine-1-oxyl radical (TEMPO)-mediated system, and highly crystalline and individualized cellulose nanofibers, dispersed in water, were prepared by mechanical treatment of the oxidized cellulose/water slurries.
Saito, T., Kimura, S., Nishiyama, Y., Isogai, A.   +3 more
openaire   +2 more sources

Micromechanics of TEMPO-Oxidized Fibrillated Cellulose Composites

ACS Applied Materials & Interfaces, 2012
Composites of poly(lactic) acid (PLA) reinforced with TEMPO-oxidized fibrillated cellulose (TOFC) were prepared to 15, 20, 25, and 30% fiber weight fractions. To aid dispersion and to improve stress transfer, we acetylated the TOFC prior to the fabrication of TOFC-PLA composite films.
Bulota, Mindaugas, Tanpichai, Supachok, Hughes, Mark, Eichhorn, Stephen, J.   +4 more
openaire   +7 more sources

OXIDIZED CELLULOSE—ABSORBABLE GAUZE

Journal of the American Medical Association, 1945
Dry gauze used to stanch bleeding in the open wound has, in the experience of most surgeons, been both life saving and hazardous. Hemorrhage has been checked which might otherwise have proved fatal, but the subsequent removal of the gauze which stuck to the raw surfaces often resulted in fresh bleeding, and the danger of infection was great.
openaire   +1 more source

Modification of carboxymethyl cellulose through oxidation

Carbohydrate Polymers, 2012
The periodate oxidation reaction of carboxymethyl cellulose involve the primary and secondary hydroxyl groups of the pyranose ring. The reaction is accompanied by the opening of the pyranose ring and resulting product is dialdehyde carboxymethyl cellulose along with some hydrated forms.
openaire   +2 more sources

Molecular Mass and Molecular-Mass Distribution of TEMPO-Oxidized Celluloses and TEMPO-Oxidized Cellulose Nanofibrils

Biomacromolecules, 2015
Native wood cellulose was oxidized by 2,2,6,6-tetramethylpiperidine-1-oxyl (TEMPO)-mediated oxidation, and the fibrous TEMPO-oxidized celluloses (TOCs) thus obtained were disintegrated in water to prepare TOC nanofibrils (TOCNs). The carboxyl groups of TOCs and TOCNs were methyl-esterified, and the methylated samples were dissolved in 8% LiCl/N,N ...
Ryoya, Hiraoki, Yuko, Ono, Tsuguyuki, Saito, Akira, Isogai   +3 more
openaire   +2 more sources

Oxidation Products of Cellulose. Salts of Oxidation Products of Cellulose

1995
The first spectra of a number of oxidized celluloses were obtained by Rowen, Hunt, and Plyler [164]. They used films of regenerated cellulose, oxidized by nitrogen dioxide or periodic acid. These authors erroneously attributed bands at 1640 and 1280 cm−1, in the spectrum of cellulose oxidized by nitrogen dioxide, to the carboxyl group.
openaire   +1 more source

Photodegradation of oxidized cotton cellulose

Journal of Applied Polymer Science, 1993
AbstractDifferent functional groups were systematically introduced into cotton cellulose and their effect on the stability of cotton toward photochemical degradation was examined. First, the cotton was progressively oxidized with sodium metaperiodate up to an oxygen consumption of 2.45 atom per 100 anhydroglucose units (agu) to form 2,3‐dialdehyde ...
Gisela Buschle‐Diller, S. Haig Zeronian   +1 more
openaire   +1 more source

Thermal properties of oxidized cellulose

Cellulose, 1995
Three series of oxidized celluloses – 2,3-dialdehyde celluloses (DACs), 2,3-dicarboxycelluloses (DCCs) and sodium 2,3-dicarboxycelluloses (NaDCCs) — were prepared, having incremental changes in their degrees of oxidation. Their thermogravimetric analysis (TG) and differential thermal analysis (DTA) were studied.
A. J. Varma, V. B. Chavan
openaire   +1 more source

37—Periodate Oxidation of Cellulose and Formaldehyde-Treated Cellulose

Journal of the Textile Institute Transactions, 1956
Experiments have been performed on the kinetics of the periodate oxidation of viscose rayon cellulose and formaldehyde-treated cellulose. There was no positive evidence that the Malaprade stage of the oxidation could be resolved into faster and slower reactions corresponding to the oxidation of more and less accessible regions, respectively. The extent
openaire   +1 more source

Oxidized Cellulose

2021
openaire   +1 more source