Hydrogels of Versatile Size and Architecture for Effective Environmental Applications

Authors : Nurettin SAHINER

Pages : 113-123

View : 20 | Download : 10

Publication Date : 0000-00-00

Article Type : Research Paper

Abstract :Cationic hydrogels from a positively charged monomer, insert ignore into journalissuearticles values(3-Acrylamidopropyl);-trimethylammonium chloride insert ignore into journalissuearticles values(APTMACl);, were synthesized as bulk, and micro- and nano-sizes. These hydrogels were utilized to remove contaminants such as food dyes and an environmentally toxic metal, arsenic. The micro- and nanohydrogels were dispersed in another hydrogel network to design a semi-interpenetrating network insert ignore into journalissuearticles values(semi-IPN); which was shown to visualize the particles that can be used for absorption purposes. The micron-sized cationic hydrogel particles were very effective in the removal of arsenic from an aqueous environment- 96% of the arsenic was removed in less than 10 min from a 55-ppm aqueous stock solution. Cationic hydrogels ca. 5 nm were also prepared and demonstrated for fluorescein dye absorption in the nanohydrogel-hydrogel semi-IPN. Hydrogel particle sizes were investigated with microscopic methods, such as optical, fluorescence, scanning electron and transmission electron microcopes.
Keywords : Arsenic removal, environmental hydrogels, microgels, nanogel, nanotechnology, semi IPN networks