Hydrophobically Associating Polyacrylamides Prepared by Inverse Suspension Polymerization: Synthesis,Characterization and Aqueous Solution Properties |
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| Authors: | Xiaolan Li Xingli Liu Quansheng Chen Yu Wang Yujun Feng |
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| Institution: | 1. Chengdu Institute of Organic Chemistry , Chinese Academy of Sciences , No. 9, Section 4, Renmin South Avenue, Chengdu, 610041, P. R. China;2. The Graduate School of the Chinese Academy of Sciences , Yuquan Road, Beijing, 100049, P. R. China;3. College of Chemistry and Environmental Protection Engineering , Southwest University for Nationalities , South Section 4, 1st Circle Road, Chengdu, 610041, P. R. China;4. Chengdu Institute of Organic Chemistry , Chinese Academy of Sciences , No. 9, Section 4, Renmin South Avenue, Chengdu, 610041, P. R. China |
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| Abstract: | Hydrophobically associating polyacrylamides (HAPAMs) were synthesized via inverse suspension polymerization using ammonium persulphate (APS)/tertramethylethylenediamine (TEMED) as the redox initiators, 2-methacryloyloxyethyl n-alkyl dimethyl ammonium bromide (DM-n, n = 8, 12, 16) as the hydrophobic comonomers. The structures of the copolymers were elucidated by FT-IR and ionic chromatographic analysis, respectively. The morphology and particle size of the resultant HAPAMs were characterized by scanning electronic microscope (SEM) and laser particle size analyzer, which revealed that spherical particles were formed and the particle size exhibited Gaussian distribution centered from 25 μ m to 162 μ m. Furthermore, the solution properties of the copolymers were studied with viscometry and the results showed that HAPAMs synthesized under optimal conditions exhibited an obvious viscosity enhancement in aqueous solution and excellent salt-tolerant capability in brine. |
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| Keywords: | Inverse suspension polymerization hydrophobically associating polyacrylamide polymeric microspheres hydrophobic interaction solution properties |
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