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Composite Beads Based on Chitosan and a Synthetic Polycation with Sorption Properties Modulated by the Cross‐Linking Strategy
Author(s) -
Dragan Ecaterina Stela,
Cocarta Ana Irina
Publication year - 2015
Publication title -
macromolecular symposia
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.257
H-Index - 76
eISSN - 1521-3900
pISSN - 1022-1360
DOI - 10.1002/masy.201400146
Subject(s) - sorption , chitosan , composite number , metal ions in aqueous solution , langmuir adsorption model , materials science , chemical engineering , metal , ion , nuclear chemistry , adsorption , polymer chemistry , chemistry , composite material , organic chemistry , metallurgy , engineering
Summary A comparative study on the relation between the cross‐linking strategy and binding capacity of Cu 2 + , and Ni 2 + , of some novel composite beads based on chitosan (CS) and poly(vinylamine) (PVAm), is presented in the paper. The equilibrium sorption capacity of the metal ions onto the CS/PVAm composite beads was strongly depending on the cross‐linking strategy, and on the metal ion. Thus, the maximum sorption capacity values obtained by fitting the Langmuir isotherm on the data at 25 °C were 192.57 mg Cu 2 + /g, and 175.05 mg Ni 2 + /g, for the in‐situ cross‐linked beads, and 166.55 mg Cu 2 + /g, and 130.97 mg Ni 2 + /g, for the post‐cross‐linked beads.