. . "Hydrogel-forming absorbent polymer materials are also commonly referred to as ???hydrocolloids,??? or ???superabsorbent??? materials and can include polysaccharides such as carboxymethyl starch, carboxymethyl cellulose, and hydroxypropyl cellulose; nonionic types such as polyvinyl alcohol, and polyvinyl ethers; cationic types such as polyvinyl pyridine, polyvinyl morpholinione, and N,N-dimethylami" . .