Preparation and characterization of N-methylene phosphonic and quaternized chitosan composite membranes for electrolyte separations

Enhanced cell affinity of poly(l-lactide) film by immobilizing phosphonized chitosan

“…NMPC was synthesized as in the literature [3]. Toluidine Blue O and N-(3-dimethylaminopropyl)-N'-ethylcarbodiimide (EDAC) were supplied by Sigma.…”

“…N-Methylene phosphonic chitosan (NMPC), a derivative of chitosan, is synthesized by reacting with methylene phosphonic acid using formaldehyde [3]. Many researches imagine that NMPC benefits cell attachment and proliferation [4,5].…”

Microwave assisted rapid synthesis of N-methylene phosphonic chitosan via Mannich-type reaction

“…Improved proton conductivity in reaction product might be due to presence of zwitterionic activity (Saxena, Kumar & Shahi, 2006). The product has multiple coordinated protons, two weak ones; in addition, there was another proton available at nitrogen atom.…”

Chitosan Based Membranes for Separation, Pervaporation and Fuel Cell Applications: Recent Developments

“…The developed membrane exhibited the significant changes in molecular constitutions, crystalline and thermal properties. Modifications of CS were carried out by either introducing phosphonic acid group or by quaternization of existing primary amine groups in order to make it water soluble [54]. The functionalized materials were used to prepare charged nanoporous composite membranes of different compositions of N-methylene phosphonic chitosan (NMPC) and quaternized chitosan (QC) by taking required modified materials and poly(vinyl alcohol) 50% (w/w) in aqueous media and later the membranes were gelated in methanol at 10°C to tailor pore structure in the membrane matrix.…”