Poonam Trivedi1, Jens Schaller2, Jan Gustafsson1, Pedro Fardim1,3*
Journal of Renewable Materials, Vol.5, No.5, pp. 400-409, 2017, DOI:10.7569/JRM.2017.634143
Abstract In the present study, we report the supramolecular design of cellulose-sulfonate hydrogel beads by blending water soluble sodium cellulose ethyl sulfonate (CES) with the pretreated cellulose in sodium hydroxide-ureawater solvent system at −6 °C followed by coagulation in the 2M sulfuric acid system. The increasing of CES amount from 10% to 90% had a substantial effect on the viscosity and storage (G′) and loss (G″) moduli of the blended solutions. The CES concentration up to 50% in blends led to the formation of physically stable hydrogels after coagulation in acidic medium at pH-1 and showed the retention of nearly the… More >
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