The objective of this study was to investigate the use of chitosan-clay nanocomposite (CC) as an adsorbent for Rhodamine 6G (Rh-6G). The effects of adsorbent dose, contact time, and concentration on the adsorption process were systematically studied. Isotherm models were applied to the experimental equilibrium data obtained from spectrophotometric measurements of dye adsorption. Various Kinetic models were used to describe the kinetic data and evaluate of rate constants. Rh-6G loaded adsorbents were investigated for their optical and photophysical properties.
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http://dx.doi.org/10.1016/j.ijbiomac.2014.11.009 | DOI Listing |
Int J Biol Macromol
January 2025
Exact Sciences and Engineering, University of Vale do Taquari -Univates, Lajeado, RS, Brazil. Electronic address:
This study evaluates the properties of starch/chitosan films (SCF) produced via the casting method, incorporating 40 % (w/w) plasticizers (glycerol and sorbitol) and various concentrations (0, 3, 5, and 10 % (w/w)) of nanoclays (Cloisite 20A, Cloisite 30B, and K-10). The effects of each nanofiller on the films were thoroughly investigated. Films containing nanoclays exhibited reduced water solubility and enhanced thermal stability compared to films without nanofillers.
View Article and Find Full Text PDFInt J Biol Macromol
December 2024
Institute of Tissue Regeneration, Soonchunhyang University, Cheonan 31151, Republic of Korea; Department of Surgery, Soonchunhyang University Cheonan Hospital, Cheonan 31151, Republic of Korea. Electronic address:
Although hemostatic powders are commonly used in clinical and emergency settings, they frequently show poor absorption, raise cytotoxicity issues, and are not effective for fatal non-compressible bleeding. The purpose of this research is to create a self-gelling hemostatic powder based on chitosan, bentonite, and sodium polyacrylate (CBS) to improve the hemostatic effect. When liquid comes into contact with CBS powders, they can fuse and form a stable hydrogel in less than 30s.
View Article and Find Full Text PDFSmall
January 2025
Department of Physics and Chemistry "Emilio Segrè", University of Palermo, Viale delle Science 17, Palermo, 90128, Italy.
In this work, it is reported a scalable and systematic protocol for the preparation of xerogels based on the use of green, highly available, and low-cost materials, i.e. halloysite nanoclay and chitosan, without the need for any expensive equipment or operational/energetic demands.
View Article and Find Full Text PDFPolymers (Basel)
October 2024
Institute of Chemistry and Chemical Technology, Faculty of Natural Sciences and Technology, Riga Technical University, 1048 Riga, Latvia.
The current research is devoted to the development and characterization of green antimicrobial polymer biocomposites for food packaging applications. The biocomposites were developed by melt compounding on the basis of two different succinate polymer matrices with varying chain stiffness-polybutylene succinate (PBS) or its copolymer with 20 mol.% of polybutylene adipate (PBSA).
View Article and Find Full Text PDFRegen Biomater
August 2024
Engineering Research Center of Western Resource Innovation Medicine Green Manufacturing, Ministry of Education, School of Chemical Engineering, Northwest University, Xi'an 710069, China.
Cartilage defects are frequently caused by trauma, illness and degradation of the cartilage. If these defects are not sufficiently treated, the joints will degrade irreversibly, possibly resulting in disability. Articular cartilage lacks blood vessels and nerves and is unable to regenerate itself, so the repair of cartilage defects is extremely challenging in clinical treatment.
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