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Research Progress on Synthesis of Amphoteric Polyacrylamide

A novel amphoteric polyacrylamide (PDAA) was prepared by inverse emulsion polymerization. The influence of its cationic degree and molecular weight on retention property was discussed. Then, the chemical structure and micromorphology of the obtained PDAA were characterized by Fourier infrared spectrum (FTIR), NMR hydrogen spectrum ( 1 H NMR), gel permeation chromatography (GPC), and scanning

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.

In this paper,the research progress of amphoteric polyacrylamide was introduced.The characteristic and research progress of several kinds of synthesis methods of amphoteric polyacrylamide,such as aqueous solution polymerization,inverse emulsion polymerization,inverse microemulsion polymerization,suspension polymerization,dispersion

Preparation and properties of amphoteric polyacrylamide

The particle size of the synthesized amphoteric polyacrylamide (AmPAM) ranged from 1 to 8 μm and the intrinsic viscosity ranged from 5.6 to 14.2 dL/g.

Synthesis Process of Amphoteric Polyacrylamide - ResearchGate

AmPAM improved the breaking length of paper sheets made from virgin KHW by 25%, while by 80% for OCC, when at the dosage of 0.5% (wt% to mass of oven dried pulp). When AmPAM was applied with the combination of CS, a negative synergism was observed.