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Chemical modification of chloromethylated polystyrene with pyridylazo‐β‐naphthol
Author(s) -
Abdelaal M. Y.,
Kenawy I. M. M.,
Hafez M. A. H.
Publication year - 2000
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 - 10.1002/1097-4628(20000929)77:14<3044::aid-app30>3.0.co;2-q
Subject(s) - thermogravimetric analysis , alkylation , polystyrene , polymer chemistry , moiety , chemistry , ion exchange , thermal decomposition , polymer , chemical modification , materials science , catalysis , organic chemistry , ion
Chloromethylated polystyrene was chemically modified through alkylation of pyridylazo‐β‐naphthol (PAN) in the presence of a phase‐transfer catalyst. The chemical modification was achieved through O ‐alkylation as well as N ‐alkylation of PAN, leading to formation of polymer‐supported quaternary ammonium salt in the latter case. Both types of a polymer‐supported PAN moiety were detected by FTIR spectroscopic analysis. The complexation behavior of the polymer‐supported PAN as an ion‐exchanger toward some metal ions was studied. Thermogravimetric and differential thermogravimetric analyses data were used to study the kinetics of the thermal decomposition process of the ion‐exchanger. Some thermodynamic parameters for the ion‐exchanger were calculated by applying the rate theory of the first‐order reaction. © 2000 John Wiley & Sons, Inc. J Appl Polym Sci 77: 3044–3048, 2000