Dispersion copolymerization of acrylamide and dimethyl diallyl ammonium chloride in ethanol‐water solution |
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| Authors: | Xiaona Wang Qinyan Yue Baoyu Gao Xiaohui Si Xun Sun Shengxiao Zhang |
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| Affiliation: | Shandong Key Laboratory of Water Pollution Control and Resource Reuse, School of Environmental Science and Engineering, Shandong University, Jinan 250100, Shandong, People's Republic of China |
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| Abstract: | Poly (acrylamide‐dimethyldiallylammonium chloride) (PAM‐DMDAAC) particles have been prepared via dispersion polymerizations using poly (vinyl pyrrolidone) (PVP) as a steric stabilizer in ethanol‐water media. The monomer reactivity ratios of acrylamide (AM, r1) and dimethyldiallylammonium chloride (DMDAAC, r2) were determined as 6.664 and 0.120, respectively, which means that PAM‐DMDAAC is a nonideal copolymer. The effects of various polymerization parameters (e.g., concentration of monomer and initiator, medium polarity, the ratio of AM to DMDAAC, initial temperature and ethylene diamine tetraacetic acid disodium (EDTA)) on the intrinsic viscosity and conversion of copolymer have been investigated. The copolymer was characterized by FTIR and NMR. The optimum operating conditions for preparing PAM‐DMDAAC were determined as ethanol content 50%, Cmonomer (wt %) 40%, nAM: nDMDAAC 8 : 2, Cinitiator (wt %) 0.04% and initiate temperature 40°C. © 2010 Wiley Periodicals, Inc. J Appl Polym Sci, 2011 |
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| Keywords: | dimethyldiallylammonium chloride acrylamide dispersion polymerization monomer reactivity ratio |
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