Which polymers are used in TPAs-U self-assembly of anionic flocculants?

In this study, the novel template polymerization and ultrasonic initiation system were applied in the self-assembly of anionic flocculants (TPAS-U) using poly (allylammonium chloride) (PAAC) as template, acrylamide and sodium p-styrene sulfonate as monomers.

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.

Does UV-initiated polymerization produce a new anionic flocculant TPAs with a microblock structure?

Conclusions A new anionic flocculant TPAS with the microblock structure was successfully synthesized through UV-initiated polymerization. The structure properties of TPAS was characterized by the FT-IR, 1H (13C) NMR, SEM and TG/DSC, and the results indicated that the formation of the microblock structure.

Do anionic microblocks affect flocculation performance?

Parameters such as pH and dosage that affected the flocculation performance, flocculation kinetics and the FTIR spectra of the generated flocs were investigated to further observe the effect of anionic microblocks on flocculation performance and understand the relationship between the flocs and flocculants.

Which flocculant is suitable for high-concentration method?

The most suitable flocculant for the high-concentration method was CPAM, and the dosage was 10 mg/L.

Why is Apam a good flocculant?

Anionic polyacrylamide (APAM) as an important flocculant possess the advantages of high molecular weight, acceptable flocculation performance, low cost and green . The anionic chemical groups in APAM are able to neutralize the positive charge of colloid particles in the wastewater and lead them to crash, aggregate and settle.