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Synthesis and characterization of new water‐soluble metal–polymer complex and its application for arsenite retention
Author(s) -
Rivas Bernabé L.,
Aguirre María del Carmen,
Yáñez Jorge
Publication year - 2008
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.29322
Subject(s) - thermogravimetry , tin , differential scanning calorimetry , polymer , metal ions in aqueous solution , thermal stability , materials science , hydride , metal , fourier transform infrared spectroscopy , nuclear chemistry , chemistry , analytical chemistry (journal) , polymer chemistry , inorganic chemistry , chemical engineering , organic chemistry , physics , thermodynamics , engineering
New water‐soluble metal–polymers of poly(acrylic acid)s (AA) with different amounts of tin (3, 5, 10, and 20 wt %) were synthesized and characterized. The materials were characterized by 1 H NMR and FTIR spectroscopy, X‐ray diffraction (XRD), specific area by isotherm of CO 2 , and thermogravimetry‐differential scanning calorimetry (TG‐DSC). The synthesized material is crystalline and shows an average crystal size 90–130 nm and has a high thermal stability (>200°C). Texturally, they are complexes of small specific area, which decreases when the crystal size increases with the tin content. Presumably, the Sn(II) ions coordinate through 2‐4 carboxylate groups by a conventionally bidentate structure; however, they are not symmetric. Studies have been dedicated to support of tin in polymers to increase its efficiency in eliminating pollutants. The tin‐metal salt is added to the poly(AA) matrix to increase its ability to remove As(III) from an aqueous solution. The liquid‐phase polymer‐based retention technique is applied to retain and separate contaminants from water. The analysis of As(III) and As(V) species was made by combining liquid high‐resolution chromatographic coupled to hydride generation absorption atomic spectrophotometer (HPLC‐HG‐AAS). All indicated that As(III) was the predominant species bound to the polymer complex for the pH range 4–8. The polymers containing 10 and 20 wt % Sn presented the highest retention of 70 and 90% As(III), respectively. © 2008 Wiley Periodicals, Inc. J Appl Polym Sci, 2009