Synthesis and application of a new High-Molecular-Weight hydroxamic acid flocculant containing phenyl

摘要

A new High-Molecular-Weight hydroxamic acid containing phenyl (HHCP) as high efficiency flocculant was synthesized. Firstly, at 15～35□, Copolymerization of acrylamide and styrene was carried out in a microemulsion system, in which AM aqueous solution was the continue phase and St was the dispersed phase using ST-80 as surfactants respectively. Hydroxamic functions were prepared with hydroxylamine salt at temperatures from 60□ to 90□. The effect of reaction conditions on the structure was studied. The copolymer was characterized by FT-IR and UV and the effect of copolymer on red mud setting process was tested. The results was that the new High-Molecular-Weight hydroxamic acid containing phenyl can meet the industry demand and it is better than the similar foreign products.