Premium
Graft copolymerization of 4‐vinyl pyridine onto konjac glucomannan initiated by ammonium persulfate
Author(s) -
Liu Changhua,
Dai Xun,
Chen Jianguang,
Chen Yanqing,
Guo Xiaoli,
Huang Yuming
Publication year - 2009
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.30305
Subject(s) - ammonium persulfate , grafting , persulfate , acrylonitrile , thermogravimetric analysis , aqueous solution , copolymer , nuclear chemistry , monomer , polymer chemistry , chemistry , glucomannan , pyridine , sulfuric acid , inorganic chemistry , organic chemistry , catalysis , polymer , biochemistry
The grafting of 4‐vinyl pyridine (4‐VP) onto konjac glucomannan (KGM) by ammonium persulfate (APS) as the initiator was studied in an acid aqueous solution under an inert atmosphere. The grafting ratio ( G %) and grafting efficiency ( E %) were evaluated comparatively. The dependence of these parameters on the initiator concentration, sulfuric acid concentration, ratio of monomer to KGM, temperature, and reaction time was also investigated. Under conditions of [KGM] = 1.00 g/L, [APS] = 1.00 × 10 −2 mol/L, [4‐VP] = 9.32 × 10 −2 mol/L, [H + ] = 5.00 × 10 −2 mol/L, temperature = 35°C, and time = 120 min, the optimum G % and E % were 307.27 and 52.75%, respectively. The proof of grafting was obtained from thermogravimetric analysis and infrared spectra. Preliminary research of the graft's adsorption capacity for heavy‐metal ions [Cr(VI), Cu(II), Pb(II), and Cd(II)] was done. © 2009 Wiley Periodicals, Inc. J Appl Polym Sci, 2009