What is a high molecular weight polyacrylamide (PAM)?

Low molecular weight PAM can be used as a paper strengthening agent. Medium molecular weight polyacrylamide PAM is used as a retention and drainage aid. And high molecular weight polyacrylamide is used as a flocculant in the treatment of papermaking wastewater. At present, anionic PAM is most used in the paper industry.

What type of polyacrylamide is Apam?

Amphoteric Polyacrylamide. APAM is formed by hydrolysis and copolymerization of vinyl amide and vinyl cationic monomer acrylamide monomer. It is an irregular zwitterionic polymer with both positive and negative charges on the molecular chain. Non-ionic Polyacrylamide.

What is the difference between Apam and NPAM?

APAM is formed by hydrolysis and copolymerization of vinyl amide and vinyl cationic monomer acrylamide monomer. It is an irregular zwitterionic polymer with both positive and negative charges on the molecular chain. Non-ionic Polyacrylamide. NPAM is a linear polymer with high molecular weight and low ionicity.

What is the adsorption density of CPAM and Apam?

PAM and APAM exhibited a low adsorption density on Na-MMT surface, respectively 60.36 kg/m 3 and 65.28 kg/m 3, very few molecules have been adsorbed, compared to 147.143 kg/m 3 of CPAM molecules. The adhesion of CPAM was good and more accelerated by the positive charge of its molecules with the negative charge of Na-MMT. 3.4.

What is cationic polyacrylamide (CPAM)?

Cationic Polyacrylamide. In general, CPAM is white powder in appearance with an ionic degree ranging from 20% to 55%. It has the characteristics of high polymer electrolyte and is suitable for the treatment of wastewater with negative charge and rich in organic matter.

Is Apam soluble in water?

The appearance of APAM is white powder with a molecular weight ranging from 6 million to 25 million. With good water solubility, it can dissolve in water in any proportion, but is insoluble in organic solvents. Meanwhile, the effective PH value ranges from 4 to 14.