Synthesis and Characterization of Cellulose Nanocrystal-Grafted poly(2-dimethylaminoethyl methacrylate) with application in Ion removal from aqueous solutions
Subject Areas : نانومواد و پلیمرهای هوشمندMojtaba Azizi 1 , Milad Aghazadeh Bonab 2 , 3
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Keywords: Water-treatment, Nitrate ion removal, CNC, RAFT, Smart polymers,
Abstract :
This study focuses on the synthesis and characterization of poly(2-dimethylaminoethyl methacrylate) (PDMAEMA) grafted onto cellulose nanocrystals (CNC) using reversible addition-fragmentation chain transfer (RAFT) polymerization. The main goal was to assess the efficacy of CNC-g-PDMAEMA as a material for the removal of ionic pollutants, specifically nitrate ions, from water solutions. The functionalization of CNC with PDMAEMA has been confirmed using Fourier-transform infrared (FTIR) spectroscopy, thermogravimetric analysis (TGA), and UV-Vis spectroscopy. Results indicated that CNC-g-PDMAEMA demonstrates pH-responsive characteristics, wherein the protonation of amino groups dramatically enhances electrostatic interactions with nitrate ions, thereby increasing adsorption efficiency. The efficacy of nitrate ion extraction as our pollutant from aqueous solutions was examined, demonstrating the material's superior adsorption capability. This research illustrates the efficacy of stimuli-responsive nanoparticles in water treatment, providing an environmentally sustainable method for the elimination of aqueous ionic contaminants and improving water purification procedures.
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