Biodegradable and water-soluble polycarboxylates derived from starch

This research present electrical and thermal properties of the Nano composite high density poly Utilization of natural resources, like polysaccharide, as a raw material for the preparation of biodegradable and functional polymer was studied. Partially dicarboxylated polysaccharides were prepared using starch from corn, sago and tapioca, and comparison was made of their biodegradability, hydrolytic degradability and calcium ion sequestration capacity. The biodegradability of dicarboxylated starch sodium salt (DC-starch) depended on the dicarboxylation degree. DC-starch containing more than 75-85 mol% of unreacted glucopyranose groups in the polymer chain showed excellent biodegradation. DC-starch with high dicarboxylation degree was resistant to biodegradation but showed good calcium ion sequestration. Among DC-starches from corn, sago and tapioca starches, hydrolytic degradability and calcium ion sequestration performance were essentially the same.