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| Content Provider | Royal Society of Chemistry (RSC) |
|---|---|
| Author | Chen, Nan Feng, Li Zheng, Huaili Zhao, Chuanliang Gao, Baoyu Zhang, Shixin |
| Copyright Year | 2017 |
| Abstract | In this study, a novel cationic polyacrylamide (CPAM) with a microblock structure was successfully synthesized through ultrasonic-initiated template copolymerization (UTP) using allyltrimethylammonium chloride (TM) and acrylamide (AM) as monomers, and sodium polyacrylate (NaPAA) as a template. Fourier transform infrared spectroscopy (FT-IR), 1H (13C) nuclear magnetic resonance spectroscopy (1H (13C) NMR), and thermogravimetric analysis (TGA) were employed to characterize the properties of the polymers. The results showed that the novel cationic microblock structure was formed in the template copolymer of TM and AM (TPTA). Besides, the copolymerization was demonstrated to follow an I zip-up (ZIP) template polymerization mechanism through the analysis of association constant (MK) and polymerization kinetics. The flocculation results of textile-dyeing sludge dewatering revealed that the polymer with the novel microblock structure showed an excellent flocculation performance. When the optimal conditions at pH of 7.0, dosage of 40 mg L−1 and the intrinsic viscosity of 2.3 dL g−1, the minimum SRF of 4.9 × 1012 m kg−1 and FCMC of 72.1% were observed. During the flocculation process, the cationic microblocks in TPTA extremely enhanced the ability of charge neutralization and bridging, and contributed much to the excellent flocculation performance in textile-dyeing sludge dewatering. |
| Starting Page | 11626 |
| Ending Page | 11635 |
| Page Count | 10 |
| File Format | HTM / HTML PDF |
| ISSN | 20462069 |
| Volume Number | 7 |
| Issue Number | 19 |
| Journal | RSC Advances |
| DOI | 10.1039/c6ra27986d |
| Language | English |
| Publisher | Royal Society of Chemistry |
| Access Restriction | Open |
| Subject Keyword | Thermogravimetric analysis SRF Polyacrylamide Intrinsic viscosity Binding constant Polymerization Amplitude modulation Nuclear magnetic resonance spectroscopy Polymer Fourier-transform infrared spectroscopy Acrylamide Chloride Fourier Flocculation Sodium polyacrylate Nuclear magnetic resonance Copolymer Uridine triphosphate |
| Content Type | Text |
| Resource Type | Article |
| Subject | Chemistry Chemical Engineering |
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