Synthesis and characterization of a novel sugar based cross-linker

Abstract

There are very few literature reports on the synthesis of monosaccharide based cross-linkers. A novel monosaccharide sugar-based cross-linker was synthesized by using D-mannitol, and allyl chloride in basic medium at low temperature (40°C) under inert atmospheric conditions. We have used a new synthetic scheme which does not involve the use of autoclave at high temperature and pressure for carrying out allylation with allyl chloride. The synthesized product has been characterized by, Fourier-transform infrared (FT-IR) spectra and 1 H Nuclear magnetic resonance (1 HNMR) spectra. The formation of allyl mannitol was also confirmed with the help of elemental analysis of C, H and O. Cross linked polymer gel samples were prepared by polymerizing acrylic acid monomer alongwith the synthesized cross-linker at different concentrations. Aqueous gels have been prepared from the cross-linked polymers and their swelling capacity has been studied. It has been found that these gels act as superabsorbent materials. The optimum ratio of cross-linker and acrylic acid monomer for the preparation of gel having highest swelling capacity (~ 28000% of water) was found to be 0.03 g crosslinker with 12.0 g. monomer.