Synthesis of a Cationic Polyacrylamide under UV Initiation and Its Flocculation in Estrone Removal
A ternary cationic polyacrylamide (CPAM) with the hydrophobic characteristic was prepared through ultraviolet- (UV-) initiated polymerization technique for the estrone (E1) environmental estrogen separation and removal. The monomers of acrylamide (AM), acryloyloxyethyl-trimethyl ammonium chloride (D...
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| Format: | Article |
| Language: | English |
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Wiley
2018-01-01
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| Series: | International Journal of Polymer Science |
| Online Access: | http://dx.doi.org/10.1155/2018/8230965 |
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| author | Jiaoxia Sun Xiqin Ma Xiang Li Jianxin Fan Qingkong Chen Xuelian Liu Jin Pan |
| author_facet | Jiaoxia Sun Xiqin Ma Xiang Li Jianxin Fan Qingkong Chen Xuelian Liu Jin Pan |
| author_sort | Jiaoxia Sun |
| collection | DOAJ |
| description | A ternary cationic polyacrylamide (CPAM) with the hydrophobic characteristic was prepared through ultraviolet- (UV-) initiated polymerization technique for the estrone (E1) environmental estrogen separation and removal. The monomers of acrylamide (AM), acryloyloxyethyl-trimethyl ammonium chloride (DAC), and acryloyloxyethyl dimethylbenzyl ammonium chloride (AODBAC) were used to synthesize the ternary copolymer (PADA). Fourier transform infrared spectroscopy (FT-IR), 1H nuclear magnetic resonance spectroscopy (1H NMR), thermogravimetry/differential scanning calorimetry (TG/DSC), and scanning electron microscopy (SEM) were employed to characterize the structure, thermal decomposition property, and morphology of the polymers, respectively. FT-IR and 1H NMR results indicated the successful formation of the polymers. Besides, with the introduction of hydrophobic groups (phenyl group), an irregular and porous surface morphology and a favorable thermal stability of the PADA were observed by SEM and TG/DSC analyses, respectively. At the optimal condition (pH = 7, flocculant dosage = 4.0 mg/L and E1 concentration = 0.75 mg/L), an excellent E1 flocculation performance (E1 removal rate: 90.1%, floc size: 18.3 μm, and flocculation kinetics: 22.69×10-4 s−1) was acquired by using the efficient flocculant PADA-3 (cationic degree = 40%, and intrinsic viscosity = 6.30 dL·g−1). The zeta potential and floc size analyses were used to analyze the possible flocculation mechanism for the E1 removal. Results indicated that the charge neutralization, adsorption, and birding effects were dominant in the E1 removal progress. |
| format | Article |
| id | doaj-art-ecd3956ea20e45559a76978e0eab7107 |
| institution | Kabale University |
| issn | 1687-9422 1687-9430 |
| language | English |
| publishDate | 2018-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | International Journal of Polymer Science |
| spelling | doaj-art-ecd3956ea20e45559a76978e0eab71072025-02-03T07:26:12ZengWileyInternational Journal of Polymer Science1687-94221687-94302018-01-01201810.1155/2018/82309658230965Synthesis of a Cationic Polyacrylamide under UV Initiation and Its Flocculation in Estrone RemovalJiaoxia Sun0Xiqin Ma1Xiang Li2Jianxin Fan3Qingkong Chen4Xuelian Liu5Jin Pan6School of River and Ocean Engineering, Chongqing Jiaotong University, Chongqing 400074, ChinaSchool of River and Ocean Engineering, Chongqing Jiaotong University, Chongqing 400074, ChinaSchool of Civil Engineering and Architecture, Chongqing University of Science and Technology, Chongqing 401331, ChinaSchool of River and Ocean Engineering, Chongqing Jiaotong University, Chongqing 400074, ChinaSchool of River and Ocean Engineering, Chongqing Jiaotong University, Chongqing 400074, ChinaSchool of River and Ocean Engineering, Chongqing Jiaotong University, Chongqing 400074, ChinaSchool of River and Ocean Engineering, Chongqing Jiaotong University, Chongqing 400074, ChinaA ternary cationic polyacrylamide (CPAM) with the hydrophobic characteristic was prepared through ultraviolet- (UV-) initiated polymerization technique for the estrone (E1) environmental estrogen separation and removal. The monomers of acrylamide (AM), acryloyloxyethyl-trimethyl ammonium chloride (DAC), and acryloyloxyethyl dimethylbenzyl ammonium chloride (AODBAC) were used to synthesize the ternary copolymer (PADA). Fourier transform infrared spectroscopy (FT-IR), 1H nuclear magnetic resonance spectroscopy (1H NMR), thermogravimetry/differential scanning calorimetry (TG/DSC), and scanning electron microscopy (SEM) were employed to characterize the structure, thermal decomposition property, and morphology of the polymers, respectively. FT-IR and 1H NMR results indicated the successful formation of the polymers. Besides, with the introduction of hydrophobic groups (phenyl group), an irregular and porous surface morphology and a favorable thermal stability of the PADA were observed by SEM and TG/DSC analyses, respectively. At the optimal condition (pH = 7, flocculant dosage = 4.0 mg/L and E1 concentration = 0.75 mg/L), an excellent E1 flocculation performance (E1 removal rate: 90.1%, floc size: 18.3 μm, and flocculation kinetics: 22.69×10-4 s−1) was acquired by using the efficient flocculant PADA-3 (cationic degree = 40%, and intrinsic viscosity = 6.30 dL·g−1). The zeta potential and floc size analyses were used to analyze the possible flocculation mechanism for the E1 removal. Results indicated that the charge neutralization, adsorption, and birding effects were dominant in the E1 removal progress.http://dx.doi.org/10.1155/2018/8230965 |
| spellingShingle | Jiaoxia Sun Xiqin Ma Xiang Li Jianxin Fan Qingkong Chen Xuelian Liu Jin Pan Synthesis of a Cationic Polyacrylamide under UV Initiation and Its Flocculation in Estrone Removal International Journal of Polymer Science |
| title | Synthesis of a Cationic Polyacrylamide under UV Initiation and Its Flocculation in Estrone Removal |
| title_full | Synthesis of a Cationic Polyacrylamide under UV Initiation and Its Flocculation in Estrone Removal |
| title_fullStr | Synthesis of a Cationic Polyacrylamide under UV Initiation and Its Flocculation in Estrone Removal |
| title_full_unstemmed | Synthesis of a Cationic Polyacrylamide under UV Initiation and Its Flocculation in Estrone Removal |
| title_short | Synthesis of a Cationic Polyacrylamide under UV Initiation and Its Flocculation in Estrone Removal |
| title_sort | synthesis of a cationic polyacrylamide under uv initiation and its flocculation in estrone removal |
| url | http://dx.doi.org/10.1155/2018/8230965 |
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