Can CPAM form cationic microblock structure?

The continuous arrangement of cationic units in CPAM can form cationic microblock structure. The electrostatic repulsion force from microblock structure is strong, and it results in a good extension of molecular chains (Chen et al. 2020).

Does cationic microblock structure improve sludge floc formation?

Obviously, TPAMD with cationic microblock structure corresponded to the largest D f of 1.51, which indicated that cationic microblock structure could help to form more compact sludge flocs (Wilén et al. 2003; Wang et al. 2011). The cationic microblock structure significantly improved the ability charge neutralization and electrical patching.

Can cationic microblock structure improve sludge neutralization and electrical patching?

It was speculated that this phenomenon was caused by the cationic microblock structure in TPAMD. It could greatly improve the ability of electric neutralization and electrical patching. The surface charge and electrostatic repulsive force of sludge colloid particles would be rapidly reduced at a relatively small dosage.

What happens when cationic monomers are added to cpamd?

When the anionic template sodium polyacrylate (NaPAA) is added to the reaction system of CPAMD, cationic monomer DAC can be adsorbed to NaPAA by electrostatic force, and then, cationic monomers will be continuously arranged along the molecular chain of the template, thereby forming precursors with cationic microblock structure (Guan et al. 2014).

Does tpamd have cationic microblock structure?

The template copolymerization mechanism is explored by K M and polymerization kinetics. The chemical structure characterization and analytical results indicated that TPAMD had obvious cationic microblock structure synthesized by MV-TP. The polymerization mechanism was assigned to I Zip-up (ZIP) and free radical initiated polymerization.

Does tpamd have good flocculation effect on water plant sludge?

TPAMD had good flocculation effect on water plant sludge. The cationic microblock structure of TPAMD could greatly improve the charge neutralization, electrical patching, and adsorption bridging effects, and it was a benefit to form a large and dense floc structure (d 50 = 379.8 μm, D f =1.51).