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.

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.

Is Apam a uniform polymer?

The polyacrylamide is a uniform and unitary polymer. PAM has a neat smooth surface as its SEM images unfold at 2500x and 4000x. However, the surface of APAM was much rougher. Hills and valleys could be observed in its SEM images due to the interaction of chemical groups between AM and SAS.

What does Apam stand for?

anionic polyacrylamide (APAM) with a microblock structure. In the template copolymerization system, chloride) (PAAC) as a template. The chemical properties of the polymers were observed by Fourier C)), and thermogravimetry/di fferential scanning calorimetry (TG/DSC).

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.

What is the atomic percentage of Apam?

And the atomic percentage values are listed in Table 3. Meanwhile, the theoretical molecular formation of APAM and APAM-T is (C 3 H 5 ON) 8 (C 3 H 5 SO 3 Na) 2, when the dosage of SAS in the total monomer is 20 %, O/C = 0.467, N/C and S/C = 0.667.