Polyacrylamide (PAM) is a water-soluble linear polymer made of acrylamide monomer. The chemical properties of monomer acrylamide is very active, and a series of chemical reactions can be carried out in the double bond and amide group, using different processes, into different functional groups, can get different charge products: anionic, cationic, non-ionic, amphoteric polyacrylamide. The average molecular weight of PAM from thousands to tens of millions of more than a number...>