What is anionic polyacrylamide (Apam)?

Anionic Polyacrylamide (APAM) has a linear-chain structure. Amide group has a high chemical activity which can forms a series of derivatives with many kinds of compounds. Anionic Polyacrylamide (APAM) has effects of flocculation, thickening, drag reduction, adhesive, colloidal stabilizing, filming and preventing scale.

What is anionic polyacrylamide used for?

Anionic Polyacrylamide is widely used in Oil & Gas, water treatment, textile, printing and dyeing, papermaking, mineral processing, coal washing, medicine, sugar, breeding, building materials, agriculture and other industries. It is known as the most widely used additive.

When was Apam invented?

Synthesis technology progress of APAM: The earliest in 1893, Moureu prepared polyacrylamide by using acryloyl chloride and ammonia in the low temperature. And in 1954, America takes the lead in realizing the industrialization production of polyacrylamide.

What is an anionic Pam?

Anionic PAM is produced when acrylamide is polymerized with an anionic comonomer. Water soluble PAMs have been used for decades to facilitate solid liquid separations in wastewater and drinking water treatment, the pulp and paper industry, aquaculture, and many other industrial processes.

What are the synthesis methods for anionic polyacrylamide?

Homopolymerization posthydrolysis process, homopolymerization cohydrolysis process, copolymerization approach, inverse emulsion polymerization, precipitation polymerization and radiation polymerization are the main six kinds of synthesis technologies of APAM. This review summarizes the synthesis methods for anionic polyacrylamide.

What is the difference between anionic acrylamide copolymer retention aids and strength agents?

Anionic acrylamide copolymer retention aids typically have molecular masses in the range of 5 to 20 million grams per mole. The strength agents typically have molecular masses in the hundreds of thousands. Another difference is in the form delivered to the mill.