What is anionic polyacrylamide (Apam)?

Anionic polyacrylamide (APAM) is its negative charge, which makes it highly effective in a wide range of applications. Anionic polyacrylamide (APAM) is highly water-soluble, which means that it can be easily dissolved in water and other aqueous solutions. This makes it easy to use in various applications, such as in the treatment of wastewater.

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.

How to determine anionic degree of copolymers?

The anionic degree of copolymers was determined from 13 C-NMR peak integration and titration method. The data obtained by these two methods seem to be in good agreement. The measured molecular weight of samples shows that we have reached a high molecular weight with excellent solubility.

How are water soluble acrylmide-based anionic copolymers prepared?

4. Conclusions Water soluble acrylmide-based anionic copolymers were prepared by free radical solution polymerization. By changing the AMPS monomer feed ratio from 10 to 70 weight percent, while keeping other reaction conditions constant, different anionic copolymers were synthesized.

What are vinyl copolymers containing 2-acrylamido-2-methyl-1-propane sulfonic acid?

To overcome these problems, some vinyl copolymers containing 2-acrylamido-2-methyl-1-propane sulfonic acid (AMPS) have been developed. Copolymers of acrylamide with sulfonated comono-mers, especially AMPS, offer hydrogen bonding capability and polyelectrolyte behaviour in aqueous solution .

What are acrylamide-based polymers?

Acrylamide-based polymers suffer from some deficiencies such as their rapid hydrolysis, facile thermal degradation, and undesirable properties. To overcome these problems, some vinyl copolymers containing 2-acrylamido-2-methyl-1-propane sulfonic acid (AMPS) have been developed.