Immobilization of copper ions on chitosan/cellulose acetate blend hollow fiber membrane for protein adsorption

Abstract

The prepared IMAM (CS/CA-Cu) achieved a high adsorption capacity of 69 mg-BSA per g-membrane.

Chitosan‐based nanocomposite membranes with improved properties: Effect of cellulose acetate blending and TiO2 nanoparticles incorporation

“…Various studies have been carried out to improve the mechanical strength of CS membranes. Among them, the following methods have been mostly investigated: (1) preparation of composite membranes by coating CS on some polymeric supports such as polyethersulfone (PES) and cellulose membranes or cellulose filter paper , (2) blending CS with other polymers including cellulose acetate (CA) and poly(vinyl alcohol) (PVA) , and (3) incorporation of nanoparticles into CS membranes . The coating method, however, has encountered some problems including detachment of the coated CS film or incomplete and nonuniform coverage of the support membranes.…”

“…Since CS has modifiable functional groups, the stability of its blend enhances with other polymeric materials such as cellulose. To modify CS membrane's mechanical strength, many researchers have worked on the blend of CS and CA . Khalil et al studied CS/cellulose blend and reported that the stability of CS‐based materials can be improved by blending them with other compatible biopolymers in particular cellulose.…”

Chitosan Based Regenerated Cellulose Fibers Functionalized with Plasma and Ultrasound

“…Chitosan treatments offer many advantages for regenerated cellulose fibers, such as biodegradability, non-toxicity, improved absorption ability, etc. [12][13][14][15][16][17]. In our research, plasma and ultrasound were used as treatment techniques.…”

“…Many techniques are available for applying chitosan to cellulose fibers, such as treatments of cellulose fibers with cross linking agents, where cotton fibers are soaked in chitosan solutions [7,8,[12][13][14]. In recent years, many studies have been made on cellulose fibers that are functionalized with chitosan [4][5][6][7][8][9][10][12][13][14][15][16][17][18][19][20][21]. Chitosan treatments offer many advantages for regenerated cellulose fibers, such as biodegradability, non-toxicity, improved absorption ability, etc.…”

“…The major features of regenerated cellulose fibers include a variable morphology and variable physical properties, softness, good processing characteristics, adequate liquid transport properties and good mechanical properties [4,6,[9][10][11][12][13][14]. In recent decades, many applications of regenerated cellulose fibers have been developed, not only as clothing but also as medical and sanitary products, for which a high uptake of aqueous fluids is part of the essential performance requirements [10][11][12]15]. A cellulose polymer consists of three hydroxyl groups per anhydrous glucose unit, and these groups attract water; thus cellulose is characterized by a relatively high moisture absorption [7,13].…”