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Synthesis, characterization, and properties of polymeric flocculant with the function of trapping heavy metal ions
Author(s) -
Hao Xuekui,
Chang Qing,
Li Xiaohong
Publication year - 2008
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.29243
Subject(s) - ceric ammonium nitrate , grafting , xanthate , epichlorohydrin , aqueous solution , polymer chemistry , metal ions in aqueous solution , chemistry , polyacrylamide , flocculation , reagent , acrylamide , sodium sulfite , copolymer , starch , nuclear chemistry , sodium , metal , organic chemistry , polymer
A novel crosslinked starch‐ graft ‐polyacrylamide‐ co ‐sodium xanthate (CSAX) was synthesized by grafting copolymerization reactions of crosslinked corn starch, acrylamide (AM), and sodium xanthate, using epichlorohydrin (EPI) as crosslinking reagent and ceric ammonium nitrate as initiator in aqueous solution. The effects of some factors, such as crosslinker, initiator, AM, NaOH and so forth, on the flocculation were investigated in terms of efficiency of grafting (% GE), grafting percentage (% GP), and viscosity averaged molecular weight ( M ) of the PAM pendant chains. The results showed that the CSAX was successfully synthesized with the different number and length of grafted PAM pendant chains and with the functions of removing both substance causing turbidity and heavy metal ions from aqueous solution. Under optimum synthesis conditions, CSAX exhibited excellent performances: the rate of turbidity removal (% T ) reached 98.4% and the rate of Cu 2+ removal (% R ) reached 99.2% in water treatment, respectively. © 2008 Wiley Periodicals, Inc. J Appl Polym Sci, 2009