Results 211 to 220 of about 29,021 (260)
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Carboxymethylation of Bacterial Cellulose
Macromolecular Symposia, 2010AbstractThe carboxymethylation of bacterial cellulose (BC) was studied under typical heterogeneous reaction conditions. It was found that the BC possesses a significantly lower reactivity compared to wood cellulose converted under comparable conditions.
Kerstin Schlufter, Thomas Heinze
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Carboxymethyl cellulose-based oral delivery systems
International Journal of Biological Macromolecules, 2019For administration of therapeutic agents, the oral route is favored since it is comfortable to patients and also requires a reduced cost. Recently, a considerable amount of work has been reported on carboxymethyl cellulose as oral delivery systems. In contrast to all other polysaccharides having a profile in a pharmacopeia, carboxymethyl cellulose has ...
Siamak, Javanbakht, Ahmad, Shaabani
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Ultrasound mediated enzymatic hydrolysis of cellulose and carboxymethyl cellulose
Biotechnology Progress, 2013A recombinant Trichoderma reesei cellulase was used for the ultrasound‐mediated hydrolysis of soluble carboxymethyl cellulose (CMC) and insoluble cellulose of various particle sizes. The hydrolysis was carried out at low intensity sonication (2.4–11.8 W cm−2 sonication power at the tip of the sonotrode) using 10, 20, and 40% duty cycles.
Ahmad Ziad, Sulaiman +2 more
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Nanofibrillated cellulose/carboxymethyl cellulose composite with improved wet strength
Cellulose, 2013In this paper, nanofibrillated cellulose/carboxymethyl cellulose (CMC) composite films were prepared using tape casting. The obtained transparent films showed shear induced partial alignment of fibrils along the casting direction, resulting in birefringence in cross polarized light.
Ruokolainen Janne +8 more
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Applied Clay Science, 2016
Abstract The aim of this work was to study the thermal behavior of carboxymethyl cellulose (CMC) aqueous solutions and bentonite-CMC mixtures, from room temperature to higher temperatures, above gelation, using a rheological analysis. The rheological properties of aqueous CMC solutions and bentonite-CMC dispersions at different mass concentrations of
Abdelhakim Benslimane +3 more
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Abstract The aim of this work was to study the thermal behavior of carboxymethyl cellulose (CMC) aqueous solutions and bentonite-CMC mixtures, from room temperature to higher temperatures, above gelation, using a rheological analysis. The rheological properties of aqueous CMC solutions and bentonite-CMC dispersions at different mass concentrations of
Abdelhakim Benslimane +3 more
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Carboxymethyl cellulose–gelatin complexes
Carbohydrate Polymers, 2002Abstract Carboxymethyl cellulose (CMC) complexes with gelatin (G) were prepared electrochemically (12 V, on chromium–nickel stainless steel electrodes) from aqueous blends of initial CMC/G ratio=1:0.5, 1:1 and 1:2, at pH 9, 10 and 11. The resulting complexes always contained lesser G than in the electrolytic solution.
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Swelling of carboxymethylated cellulose fibres
Cellulose, 1997Swelling of cotton cellulose fibres having different proportions of carboxyl groups in the H-form was studied. The carboxyl groups were introduced by carboxymethylation under different reaction conditions. By studying the swelling of modified cellulose samples (water retention value of non-dried fibre) it was shown that the concentration of sodium ...
ILONA RACZ, JUDIT BORSA
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Repetitive carboxymethylation of cellulose
Acta Polymerica, 1987AbstractRepetitive carboxymethylation enhances the degree of substitution of cellulose obtained from jute fibre, cotton and wood pulp. The extent of increase in the degree of substitution depends on the type of the cellulosic source. Although introduction of carboxymethyl groups resulted in products with fairly high degrees of substitution, it was foud
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Carboxymethylated nanofibrillated cellulose: rheological studies
Cellulose, 2014The rheological properties of carboxymethylated nanofibrillated cellulose (NFC), investigated with controlled shear rate- and oscillatory measurements, are reported for the first time. It was shown that the rheological properties of the studied system are similar to those reported for other NFC systems.
Ali Naderi +2 more
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