Synthesis and Characterization of Cellulose Nanocrystal-Grafted poly(2-dimethylaminoethyl methacrylate) with application in Ion removal from aqueous solutions
الموضوعات :Mojtaba Azizi 1 , Milad Aghazadeh Bonab 2 , Seyed Mahdi Saedi 3
1 - Faculty of Chemistry and Chemical Engineering, Malek Ashtar University of Technology, P.O. Box 16765-3454,Tehran, Iran
2 - Department of Polymer Engineering and Color Technology, Amirkabir University of Technology, P.O. Box 15875-4413, Tehran, Iran
3 - Faculty of Industrial Engineering, Sharif University of Technology, Tehran, Iran.
الکلمات المفتاحية: Water-treatment, Nitrate ion removal, CNC, RAFT, Smart polymers,
ملخص المقالة :
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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