What is an ionic polyacrylamide flocculant?

DESCRIPTION: Anionic polyacrylamide flocculant, viscosity builder/shale inhibitor for mineral and mining applications. EMERGENCY OVERVIEW: White, free flowing dry powder with little or no odor. Spills are very slippery. Avoid contact with skin, eyes and clothing. Contact with eyes may produce irritation and/or redness.

What spectroscopy is used to identify anionic polyacrylamide flocculant?

The anionic polyacrylamide (APAM-T) flocculant was characterized by Fourier transform infrared spectroscopy (FTIR), 1 H nuclear magnetic resonance spectroscopy (1 H NMR), and scanning electron microscopy (SEM). Furthermore, the X-ray photoelectron spectroscopy (XPS) was conducted to measure the elemental composition.

How is anionic polyacrylamide synthesized?

Synthesis mechanism The anionic polyacrylamide was synthesized by copolymerizing AM and SAS monomers. The essence of copolymerization is the free radical reaction. Thus, this chain reaction can be divided into three distinct processes: initiation, propagation, and termination.

Does Apam-T microblock structure improve flocculation performance?

In the floc particle size distribution and fragmentation and reflocculation experiments, the floc corresponding to APAM-T had the strongest regeneration ability after fragmentation, which further confirmed the criticality of the microblock structure in enhancing the flocculation performance.

Does Apam-t have anionic microblock structure?

The results of XPS and 1 H NMR spectroscopy analysis indicated the existence of anionic microblock structure in APAM-T. Besides, the copolymerization was revealed to follow the self-assembly mechanism by analyzing the association constant (KM). The flocculation performance was evaluated by turbidity and zeta potential in the flocculation tests.

How does floc particle size change in a flocculant?

Although the trends of floc particle size changes were similar for the three flocculants formed at the same dosage and molecular weight, there were differences in the degree of floc fragmentation and growth. In the first slow stirring stage (30 r/min), the floc size increased rapidly to the maximum value.