Author(s): SRIDHARI T R, DUTTA P K
Efficient procedure for the preparation of maleilated chitosan derivative has been established on the basis of the chemical modifications. Selective and quantitative maleilation of chitosan proceeds smoothly by the reaction of chitosan with maleic anhydride in dimethyl acetamide at 120°C for 4 h and resulted in the formation of amide product. Thereafter imidization by curing was done. The structure of the derivative is well confirmed by titration of carboxylic groups, elemental analysis and IR spectroscopy. The resulting maleilated chitosan exhibits much improved swelling in water. It is expected that multifunctional polar group in chitosan should have good dye adsorption capacity than pure chitosan.