Why does Apam-t have a stronger charge density?

APAM-T has stronger charge density due to its anionic microblocks compared with APAM and PAM. However, when adding excessive flocculants, the charge neutralization may be too strong to from large flocs, the excessive anionic units generate electrostatic repulsion between the small flocs, making them steadily disperse again.

Is Apam-t a novel anionic polyacrylamide?

Conclusion APAM-T is a novel anionic polyacrylamide which has been successfully synthesized by ultrasonic initiated template copolymerization. Characterization results showed the evidence of the microblock structure’s existence and the enhancement of copolymerization degree by adding the template.

Can UV-initiated template polymerization prepare a novel anionic polyacrylamide with a microblock structure?

E-mail: zhl6512@126.com; Fax: +86 23 65120827; Tel: +86 23 65120827 Ultraviolet (UV)-initiated template polymerization (UTP) was used as a feasible strategy to prepare a novel anionic polyacrylamide (APAM) with a microblock structure.

What is the molecular weight of template poly (allylammonium chloride)?

Besides, template poly (allylammonium chloride) (PAAC) was obtained from Shandong Xintai Water Treatment (Zaozhuang, China), and its molecular weight (MW) was 4200. The above reagents were of analytical grade except for AM and SAS (technical grade).

Do cationic and anionic polyacrylamide settling rates increase with charge density?

The maximum settling rates of flocs produced by cationic and anionic polyacrylamides decrease with charge density and increase with molecular weight.

What is the molecular weight of poly diallyl dimethyl ammonium chloride (PolyDADMAC)?

Moreover, template poly diallyl dimethyl ammonium chloride (polyDADMAC, analytical grade) was provided by Wuxi Lansen Chemical Co., Ltd. (Jiangsu, China) and its molecular weight was 10000.