PAS-Formaldehyde Polymer as a Polymeric Ligand
作者:
S.D. Patel,
H.S. Patel,
S.R. Patel,
期刊:
Journal of Macromolecular Science: Part A - Chemistry
(Taylor Available online 1981)
卷期:
Volume 16,
issue 7
页码: 1335-1348
ISSN:0022-233X
年代: 1981
DOI:10.1080/00222338108063239
出版商: Taylor & Francis Group
数据来源: Taylor
摘要:
p-Aminosalicylic acid (PAS) was condensed with formaldehyde in the presence of aqueous oxalic acid and aqueous sodium hydroxide. The polymer sample (PAS-F,1) obtained withacid catalyst was characterized by IR spectral study, by its Mndetermined by nonaqueous conductometric titration both against standard acid and alkali, by viscometric study in formic acid, and by DTA. The IR spectral and general characteristics of a polymer sample (PAS-F,2) prepared in the presence of aqueous alkali resemble those of a polymer sample (AP-F) prepared similarly from m-aminophenol and formaldehyde, indicating decarboxylation of PAS during the base-catalyzed polymerization of PAS with formaldehyde. Polymeric metal chelates of Fe(III), Cu(II), Zn(II), and Mn(II) ions with the PAS-F,1 polymer sample have been prepared and characterized by elemental analyses, IR spectral study, measurements of magnetic moments, and thermal analyses. Chelation ion-exchanging properties of the PAS-F,1 polymer sample have also been studied employing the batch equilibration method.
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