Introduction of basic index of polyacrylamide (PAM) product - Molecular weight
September 04, 2024
Molecular weight of PAM
The molecular weight of polyacrylamide mainly refers to the length of the molecular chain, the higher the molecular weight, the longer the polymer chain, the greater the viscosity of the polyacrylamide solution, and the greater the resistance in the solution. It should be noted that it is not the larger the molecular weight and the thicker the product, the better the effect, the actual situation is the need to determine its effect according to the wastewater experiment.
PAM molecules are polymerized by more than 100,000 acrylamide or sodium acrylate molecules (the molecular weight of acrylamide is 71, the molecular weight of PAM containing 100,000 monomers is 7.1 million), generally, the flocculation performance of PAM with high molecular weight is better.
The molecular weight of polyacrylamide and its derivatives is generally from hundreds of thousands to more than 10 million, according to the molecular weight can be divided into low molecular weight (less than 1 million), medium molecular weight (1 million to 10 million), high molecular weight (10 million to 15 million), ultra-molecular weight (more than 15 million). The molecular weight of polymer organic matter, even in the same product is not completely uniform, the nominal molecular weight is its average.
Generally, anionic polyacrylamide is used for Water Treatment Chemicals, and Polyaluminum Chloride，cationic polyacrylamide is used for sludge dewatering. The use of anionic polyacrylamide is mainly distinguished by molecular weight, while cationic polyacrylamide is distinguished by ionic degree.
Henan Hongze Environmental Protection Technology Co., Ltd
