Template Polymerization of a Novel Cationic Polyacrylamide: Sequence Distribution, Characterization, and Flocculation Performance

Template Polymerization of a Novel Cationic Polyacrylamide: Sequence Distribution, Characterization, and Flocculation Performance

In this study, the template polymer (TPDA) of dimethyldiallylammonium chloride (DMD) and acrylamide (AM) was synthesized with UV-initiated template polymerization. The reactivity ratio, Fourier transform infrared spectroscopy, 1H NMR spectroscopy, and thermogravimetric analysis were employed to char...

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Veröffentlicht in:Industrial & engineering chemistry research 2016-09, Vol.55 (37), p.9819-9828
Hauptverfasser: Zhang, Zhengan, Zheng, Huaili, Huang, Fei, Li, Xiang, He, Shengying, Zhao, Chun
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container_end_page 9828
container_issue 37
container_start_page 9819
container_title Industrial & engineering chemistry research
container_volume 55
creator Zhang, Zhengan
Zheng, Huaili
Huang, Fei
Li, Xiang
He, Shengying
Zhao, Chun
description In this study, the template polymer (TPDA) of dimethyldiallylammonium chloride (DMD) and acrylamide (AM) was synthesized with UV-initiated template polymerization. The reactivity ratio, Fourier transform infrared spectroscopy, 1H NMR spectroscopy, and thermogravimetric analysis were employed to characterize the TPDA properties. The results revealed that the addition of template sodium polyacrylate improved the reactivity ratio of DMD and increased the number and length of DMD segments in polymer molecules. The results of flocculation tests demonstrated that the DMD block structure improved the flocculation performance of TPDA, especially charge neutralization. In the optimal conditions of a TPDA dose of 9.0 mg·L–1 and a wastewater pH of 5.0–7.0, the residual concentration of suspended solids in a supernatant of coal mine wastewater reached the lowest value of approximately 20.04 mg·L–1. The TPDA flocs were large, compact, rapid to settle, and difficult to restabilize.
doi_str_mv 10.1021/acs.iecr.6b01894
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