Adsorption Studies of Ammonia, Protein, and Phytic Acid Using Chitosan Fiber Coated with Oxidized Cellulose Nanofiber

Adsorption Studies of Ammonia, Protein, and Phytic Acid Using Chitosan Fiber Coated with Oxidized Cellulose Nanofiber

Herein, chitosan (CS) fibers coated with TEMPO-oxidized cellulose nanofibers (CS/TOCN fibers) were successfully prepared using a wet spinning technique; CS was dissolved in acetic acid to obtain a CS doping solution. The tensile strength and ammonia adsorption percentages increased with increasing T...

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Bibliographic Details
Published in:Fibers Vol. 11; no. 4; p. 32
Main Authors: Dechojarassri, Duangkamol, Nishida, Kensuke, Ozakiya, Ryousuke, Furuike, Tetsuya, Tamura, Hiroshi
Format: Journal Article
Language:English
Published: Basel MDPI AG 01-03-2023
Subjects:
Acetic acid
Adsorption
Ammonia
Cellulose
Cellulose fibers
Chemical properties
Chitin
Chitosan
Coagulation
Cytochromes
Fourier transforms
Hydrogels
Lysozyme
Nanofibers
Observations
Particle size
Phytic acid
Polymers
Proteins
Saline solutions
Serum albumin
Solvents
Soybeans
Spectrum analysis
Spinning (materials)
Tensile properties
Tensile strength
TOCN
Viscosity
Wet spinning
Japan
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Summary:Herein, chitosan (CS) fibers coated with TEMPO-oxidized cellulose nanofibers (CS/TOCN fibers) were successfully prepared using a wet spinning technique; CS was dissolved in acetic acid to obtain a CS doping solution. The tensile strength and ammonia adsorption percentages increased with increasing TOCN concentration. The maximum ammonia adsorption percentage (41.39%, 8.3 mg/g) was obtained when 2% NaOH and 0.01% TOCN were used as the coagulation solution. Additionally, the adsorption of model proteins, including lysozyme (Lz), cytochrome C (Cyt C), and bovine serum albumin (BSA), were studied. In water, the CS/TOCN fibers with negative charges adsorbed more Lz with positive charges than CS fibers containing positive charges. Contrastingly, CS fibers adsorbed more Cyt C and BSA containing negative charges in phosphate-buffered saline solutions than CS/TOCN fibers. Furthermore, the adsorption percentage of phytic acid using the CS/TOCN fibers reached 64.18% (288 mg/g) within 60 min. Thus, TOCNs improved the tensile properties of CS fibers and preferred positively charged materials contaminated in water, such as ammonia, Lz, and phytic acid.
ISSN:2079-6439
2079-6439
DOI:10.3390/fib11040032