What is amphoteric polyacrylamide (ampam)?

agents for enhanced oil recovery, drainage, and retention aids in the paper manufacturer, etc.[1–5] Amphoteric polyacrylamide (AmPAM) [6,7] carries anionic and cationic charge group on the polymer back-bone, which can adsorb both organic and inorganic sus-pension substances.

Are amphoteric polyacrylamide-based nanocomposites prepared by in-situ free radical polymerization?

In this work, amphoteric polyacrylamide-based nanocomposites were successfully prepared by in-situ free radical polymerization. Acrylamide provided flexible polymeric backbone and sodium 4-styrenesulfonate was beneficial to strengthen the proprieties of salt tolerance and temperature resistance.

What is the isoelectric point of amphoteric polyelectrolyte?

Throughout the study, we found that the isoelectric point of the amphoteric polyelectrolyte we synthesized is about 7. With the increase in sodium chloride, the reduced viscosity of AmPAM increased. Among the different type of inorganic salt, the degree of in uence of anionic is I>Br >Cl. 1. Introduction

What is the isoelectric point of amphoteric polymer?

The characteristic of amphoteric polymer was also be studied. Throughout the study, we found that the isoelectric point of the amphoteric polyelectrolyte we synthesized is about 7. With the increase in sodium chloride, the reduced viscosity of AmPAM increased.

Can polyacrylamide & methyl ammonium chloride improve drag reduction performance?

Liu et al. [ 22] found that the mixed solution of polyacrylamide (PAM) and cetyltrimethyl ammonium chloride (CTAC) formed a kind of reinforced concrete structures, which improved the restriction on vortices, resulting in a better drag reduction performance.

How to determine morphology of ampam dispersion aqueous solution?

The morphologies of the particles in AmPAM disper-sion were obtained with optical microscope (Olympus BX51, Japan). Rotational viscometer (NXS-11A, China) was used to obtain apparent viscosities of the AmPAM dispersion aqueous solution.