Does hydrophobic association improve cationic polyacrylamide flocculation performance?

Yang et al. successfully synthesized a cationic polyacrylamide flocculant by grafted polymerization of DMDAAC, AM, and hydrophobic monomer butylacrylate (BA); the flocculation performance of this flocculant was evidently improved because of hydrophobic association.

What factors affect the flocculation effect of cationic polyacrylamide (CPAM)?

Cationic polyacrylamide (CPAM) is a commonly used flocculant for water treatment. Factors that affect the flocculation effect and can be controlled manually include the type and dosage of CPAM, wastewater pH, stirring time and settling time, and their reasonable setting is critical to the flocculation effect of CPAM.

How to prepare flocculant of cationic polyacrylamide PAMC?

Raw materials Flocculant of cationic polyacrylamide PAMC was prepared in our laboratory through low-pressure ultraviolet initiation by copolymerization of acrylamide and [2- (methacryloyloxy) ethyl] trimethyl ammonium chloride.

Can a polyacrylamide flocculant be synthesized by low-pressure initiation?

A novel flocculants of PADC was synthesized through low-pressure initiation. Hydrophobic monomer of CDEA was introduced to synthesis of polyacrylamide. Intrinsic viscosity and positive charge density of PADC was investigated. Chemical structures of PADC were characterized and analyzed.

How cationic polyacrylamide (PAMC) is prepared?

Flocculation and mechanism was discussed based on zeta potential and pH analysis. A novel cationic polyacrylamide (PAMC) with various cationic monomer contents were prepared by copolymerizing acrylamide (AM) and methacryloxyethyl trimethyl ammonium chloride aqueous solution (DMC) through low-pressure ultraviolet (UV) initiation.

Is polyacrylamide absorbed in kaolin particles and long chain flocculants?

Previous research suggested that polyacrylamide played an critical role in bridging of kaolin particles and long chain flocculants. Thus, we assumed partial HA was absorbed in kaolin particles, and was separated from water with kaolin particles by using PAMC.