A calix[4]arene-containing polysiloxane resin for removal of heavy metals and dichromate anion

A new calix[4]arene-based polysiloxane resin (CBPSR) was prepared from 5,11,17,23-tert-butyl-25,27-bis(cyanomethoxy)-26-(chloroformyl)-28-hydroxy- calix[4]arene via nucleophilic substitution reaction with 3-aminopropyltriethoxysilane and followed by copolymerization with octyltriethoxysilane. Batchw...

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Published inJournal of macromolecular science. Part A, Pure and applied chemistry Vol. 43; no. 1; pp. 57 - 69
Main Authors TABAKCI, Mustafa, ERSOZ, Mustafa, YILMAZ, Mustafa
Format Journal Article
LanguageEnglish
Published Colchester Taylor & Francis 2006
Subjects
Applied sciences
Exact sciences and technology
Inorganic and organomineral polymers
Physicochemistry of polymers
Preparation
adsorption
Solution polycondensation
Liquid liquid extraction
Metal ion
metal
Dichromates
Calixarene
Experimental study
extraction
Functional polymer
Lateral group
dichromate anion
Complexing agent
Preparation
pH
Ion extraction
polysiloxane resin
Siloxane copolymer
Dinitrile
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Summary:A new calix[4]arene-based polysiloxane resin (CBPSR) was prepared from 5,11,17,23-tert-butyl-25,27-bis(cyanomethoxy)-26-(chloroformyl)-28-hydroxy- calix[4]arene via nucleophilic substitution reaction with 3-aminopropyltriethoxysilane and followed by copolymerization with octyltriethoxysilane. Batchwise extraction studies have revealed a high adsorption ability of the calix[4]arene-nitrile derivatives loaded resin toward heavy metals (Cu2+, Co2+, Cd2+, Ni2+, Hg2+ and Pb2+) and dichromate anion (Cr2O72-). Liquid-liquid extraction studies show that the monomeric analogs (2, 3 and 4) do not exhibit a good affinity toward these ions.
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
ISSN:1060-1325
1520-5738
DOI:10.1080/10601320500405901