What are nonionic polyacrylamide products?

Again, nonionic polyacrylamide products are available as aqueous solutions, liquids (inverse emulsions), and dry powders. Nonionic polyacrylamides are available from very low to very high molecular weights and are used in industrial wastewater treatment, mineral process, papermaking, and other industries.

What is a high molecular weight nonionic polyacrylamide?

High-molecular-weight nonionic polyacrylamides are routinely used in the mineral processing industries as thickeners and flocculants , , . 34.2.5. Polyacrylamide product forms The product types for polyacrylamides are solutions, liquids (emulsion or dispersion), and dry powders.

What is cationic polyacrylamide?

Cationic polyacrylamides make up the second-largest portion of the polyacrylamide market, only slightly behind anionic polyacrylamides, and is by far the largest group of cationic polymers used on the industrial scale. Very high molecular weights can be achieved and are usually on the order of 5–15 million g/mol when used in wastewater treatment.

Why is Mannich polyacrylamide a low active solution?

The low active content of Mannich polyacrylamide solutions is due to the limitation in viscosity as a result of the high molecular weight of the starting polyacrylamide. Also, continued reaction with residual formaldehyde leads to eventual cross-linking and gelation of the polymer solution.

How is non ionic polyacrylamide produced?

Non-ionic polyacrylamide may be produced from its monomer by free radical polymerization using a wide variety of initiation methods.

What are the three types of polyacrylamide?

Polyacrylamide can be classified to three categories: non-ionic, anionic and cationic polyacrylamide. Keywords: Polyacrylamide; non-ionic; anionic; cationic; wastewater treatment. 1. INTRODUCTION Polyacrylamides are used in the "thickening" process of colliery effluent treatment.