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Preparation of crosslinked poly(styrene– g –N‐carboxyalkylated ethylenimine) as chelating resin
Author(s) -
Saegusa Takeo,
Kobayashi Shiro,
Yamada Akira
Publication year - 1977
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.1977.070210916
Subject(s) - styrene , polystyrene , polymer chemistry , polyethylenimine , acrylic acid , adsorption , metal ions in aqueous solution , nuclear chemistry , chemistry , chelation , metal , chemical modification , copolymer , polymer , inorganic chemistry , organic chemistry , transfection , biochemistry , gene
Carboxymethyl and ethyl groups were introduced into crosslinked poly(styrene– g –ethylenimine) (PSt– g –EI), consisting of a crosslinked polystyrene backbone with linear polyethylenimine branches, by the reaction of PSt– g –EI with monochloroacetic acid and β‐chloropropionic acid. Carboxyethylation was also performed by reaction of the PSt– g –EI with acrylic acid. The extent of the reaction was determined by the change in the nitrogen content of the resin. The adsorption of metal ions such as Cu 2+ , Cd 2+ , Hg 2+ , Ni 2+ , and Ca 2+ by carboxyalkylated PSt– g –EI was examined. With the introduction of carboxyalkyl groups, the adsorption capacity for metal ions (per gram of resin) decreased, whereas the affinity of the resin for these ions increased.