Affiliation:
1. College of Materials Science and Engineering, Beijing Forestry University, Beijing, 100083China
2. National Engineering Laboratory for Pulp and Paper, China National Pulp and Paper Research Institute Co., Ltd, Beijing, 100102, China
Abstract
AbstractA 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 (1H NMR), gel permeation chromatography (GPC), and
scanning electron microscope (SEM). Finally, the synergistic retention effects of
polydimethyldiallylammonium chloride (PDADMAC), cationic starch (CS), cationic guar
gum (CHPG), cationic chitosan (CTS), and polyamine (PA) on the novel PDAA were
investigated. The results showed that the optimum cationic degree and molecular
weight of PDAA were 25% and 4 million, respectively. The chemical structure of PDAA
was confirmed by FTIR, 1H NMR, and GPC. SEM showed that the particle size
of PDAA was between 150 and 600 nm, and the particles were very stable because
no broken particles were found. In addition, most of the five cationic polymers have
good synergistic retention effect on PDAA, and the order of synergistic effect was
PDAA/PDADMAC > PDAA/CTS > PDAA/CS > PDAA/CHPG >
PDAA/PA.
Subject
Polymers and Plastics,Physical and Theoretical Chemistry,General Chemical Engineering
Cited by
6 articles.
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