Solution properties and flocculation of hydrophobically associating cationic fluorinated polyacrylamide |
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Authors: | Peizhi Li Yiding Shen Xiaowu Yang |
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Affiliation: | (1) Key Laboratory of Auxiliary Chemistry and Technology for Chemical Industry, Ministry of Education, Shaanxi University of Science and Technology, 710021 Xi’an Shaanxi, China |
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Abstract: | The hydrophobically associating cationic fluorinated polyacrylamide (CFPAM), modified with fluorinated acrylate, 2-(perfluorooctyl)ethyl
acrylate (FEA), has been newly synthesized, by free radical micellar copolymerization in aqueous solution. The solution properties
of these polymers were investigated in details in this study. In addition, the flocculation of CFPAM was also evaluated. The
results showed that there were strong hydrophobic associations in the CFPAM aqueous solution. The addition of NaCl resulted
in an increase of solution viscosity, which indicated the good salt-resistant performance of CFPAM. The polymers also exhibited
excellent property of temperature and shearing tolerance. Furthermore, the polymer showed high surface activity. At the same
time, its flocculation properties were evaluated with kaolin suspensions using a standard jar test. All the results demonstrated
the superiority of the cationic fluorinated polyacrylamide as a flocculant. |
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