Immobilization of a thyroid hormone substitute L-thyroxine on chitosan-based smart hydrogel structure was performed to reduce the side effects required daily dose. The obtained by Schiff reaction chitosan with acetaldehyde and quaternization methyl iodide then ion exchange NaCl salt. Finally, from treatment salt at -200C. amount levothyroxine immobilized physical sorption determined molecular e...

Cationic amphiphilic diblock copolymers containing quaternized poly (2vinylpyridine) chain as a hydrophilic segment (PIp-b-PNMe2VP) were synthesized by living anionic polymerization. By IR measurement, we confirmed the quaternization of the polymer (PIp-b-PNMe2VP), and determined the degree of quaternization by conductometric titration. The surface tension experiment showed that the polymers ar...

Alkaline fuel cells (AFCs) recently attracted renewed attention because of their potential to surpass proton exchange membrane fuel cells (PEMFCs). The long-existing issues of PEMFCs, including expensive noble-metal catalysts and polymer electrolytes, as well as CO poisoning and inferior temperature endurance, prevented them from being used in a broad range of applications. Contrarily, advantag...

In this study, two-step surface modification of sawdust using triethanolamine (at 180 °C) and iodomethane 42 was performed to produce a novel quaternized biosorbent, TEA-I-SD. The characterization studies revealed significant morphological changes in the successful quaternization with nitrogen content 5.75%. highest vanadium removal (96.2%) achieved at pH 4 (dosage 1 g/L, initial concentration ...