Thermal resistance of magnetic polymeric composites based on styrene, divinylbenzene, and Ni and Co particles

Polymers based on styrene (STY) and divinylbenzene (DVB) are widely used for water treatment. The chemical modification of these materials, with the introduction of chemical groups, increases their selectivity for certain types of contaminants. The incorporation of magnetic particles makes these sys...

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Bibliographic Details
Published in:Journal of thermal analysis and calorimetry 2014-07, Vol.117 (1), p.369-375
Main Authors: Simplício, Simone, Lucas, Elizabete Fernandes, da Silva Costa, Marcos Antonio, Costa, Luciana Cunha, de Santa Maria, Luiz Claudio
Format: Article
Language:English
Subjects:
Analysis
Analytical Chemistry
Aquifers
Chemistry
Chemistry and Materials Science
Cobalt
Composite materials industry
Contaminants
Divinylbenzene
Inorganic Chemistry
Measurement Science and Instrumentation
Nickel
Particulate composites
Physical Chemistry
Polymer Sciences
Polymers
Resins
Styrenes
Thermal stability
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Summary:Polymers based on styrene (STY) and divinylbenzene (DVB) are widely used for water treatment. The chemical modification of these materials, with the introduction of chemical groups, increases their selectivity for certain types of contaminants. The incorporation of magnetic particles makes these systems useful for removing contaminants from aquifers, due to their magnetic attraction of certain residues. In this work, STY–DVB resins (unmodified, sulfonated, and impregnated with nickel and cobalt particles) were analyzed by thermogravimetry. The thermal stabilities of all the samples were compared, showing that sulfonation reduces the thermal stability of the resin, but the incorporation of metal particles restores that stability, with the extent of this recovery depending on the type of metal. This result shows that even when the incorporation of metal particles does not involve removal of contaminants by magnetic attraction, this inclusion is still justified because it increases the material’s thermal stability and also makes it more efficient for removing certain types of non-metallic contaminants, as observed in a previous study. Besides this, the thermogravimetric analysis was highly useful to ascertain the changes caused to the materials, including allowing inferences on the semi-quantitative results of the degree of sulfonation and confirming that metal compounds are not only physical mixtures.
ISSN:1388-6150
1588-2926
1572-8943
DOI:10.1007/s10973-014-3703-9