期刊
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
卷 190, 期 -, 页码 1007-1014出版社
ELSEVIER
DOI: 10.1016/j.ijbiomac.2021.08.228
关键词
Cationic cellulose nanofibers; Slow iodine release; Antibacterial activity
The research focused on the formation of quaternized nanocellulose triiodide for controlled release of iodine, showcasing its antimicrobial efficacy against E. coli and S. aureus. The fibers sustained 100% antimicrobial activity over six months, demonstrating potential applications in biomedical and water purification processes.
The reported research involves formation of quaternized nanocellulose triiodide for use as an agent for controlled release of iodine. Nanocellulose was extracted from bagasse and the extracted cellulose nanofibers (CNFs) were quaternized with 3-chloro-2-hydroxypropyltrimethyl ammonium chloride (CHPTAC) in NaOH/urea solution. This was followed by exchange of Cl- with I-3(-) by reaction with KI/I-2. Nanofibers having I-3(-) anions were characterized by SEM, TEM, XRD, XRF and FTIR spectroscopy. The iodine content was estimated to be 33.42% and the fibers showed no leaching of molecular I-2 in detectable amounts. The fibers showed a maximum activity of 94.73% and 99.86% against E. coli and S. aureus, respectively. These are capable of sustaining 100% antimicrobial activity over a period of six months. These fibers can thus find potential applications as a disinfectant agent in biomedical and water purification processes.
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