| 초록 |
Superabsorbent polymers (SAPs) are three-dimensional networks of hydrophilic polymers connected by chemical and/or physical crosslinking. Currently used poly(acrylic acid) based SAP shows excellent water absorbing properties, but its non-degradability might cause problems in future use. As a biodegradable superabsorbent polymer, crosslinked carboxymethylcellulose-graft-poly(itaconic acid) was prepared. Both arboxymethylcellulose (CMC) and itaconic acid (IA) are non-toxic, water soluble materials and known to be readily biodegradable. The crosslinked polymer was synthesized using potassium persulfate as an initiator is in presence of sodium hypophosphite hydrate as a neutralizing agent and N,N’-methylenebisacrylamide as a crosslinker. Effects of polymerization conditions, such as CMC-to-IA ratio, concentrations of monomer/initiator/neutralizing agent/crosslinker, and temperature, to the structure of resulting materials will be discussed. |
