Journal
MINI-REVIEWS IN ORGANIC CHEMISTRY
Volume 15, Issue 3, Pages 227-235Publisher
BENTHAM SCIENCE PUBL LTD
DOI: 10.2174/1570193X15666171213155054
Keywords
Natural polymer flocculants; graft polymerization; coagulation; initiation system; redox initiation; mass ratio of polymer
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Funding
- National Natural Science Foundation of China [51608078]
- Science and Technology Research Project of Chongqing Municipal Education Commission of China [KJ1600601, KJ1600631]
- Natural Science Foundation Project of CQ CSTC [cstc2016 jcyjA0197]
- China Postdoctoral Science Foundation [2017M622970]
- Chongqing Postdoctoral Science Foundation [Xm2017035]
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Natural polymer flocculants (NPF) and their derivatives as the eco-friendly, nontoxic and biodegradable materials have attracted significant attention in water treatment. The graft polymerization of NPF and its synthesis mechanisms that have been proposed in the literature are mainly reviewed in this paper. Initiation system is the key factor in the modification of NPF and it influences the characteristics of copolymer in terms of grafting efficiency, grafting percentage, molecular weight and cationic degree. Reaction time, reaction temperature and the molar ratio of monomer to NPF affect the synthesis of NPF as well. The modified NPF possessing the higher molecular weight and cationic degree contributes to the better coagulation-flocculation performance. The solubility of NPF is improved after grafting monomer onto the NPF backbone.
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