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Grafting of cyclodextrins onto filter paper
Authors:Rita C de Bergamasco  Gisella M Zanin  Flavio F de Moraes
Institution:(1) Chemical Engineering Department, State University of Maringa, Av. Colombo 5790, 87020-900 Maringa, , PR, Brazil
Abstract:Grafting of cyclodextrins and cyclodextrins derivatives on cellulosic surface, such as paper or filter paper, provides hosting cavities that can include a large variety of chemicals for specific cellulose finishing. In this study grafting of monocholorotriazinyl-β-cyclodextrin (MCT-β-CD) and β-cyclodextrin (β-CD) to filter paper has been performed. β-cyclodextrin has been bonded to filter paper using 1,4-butanediol diglycidyl ether as the crosslinking agent. The untreated and treated filter papers were characterized by differential scanning calorimetry (DSC) and thermogravimetric analysis (TGA), demonstrating the covalent binding of cyclodextrins to filter paper. The quantification of β-CD and MCT-β-CD grafted to filter paper was determined by the dye extinction method with the inclusion of phenolphthalein. The final β-CD content amounted to 15.9 μmol per gram of support (1.8% by weight), and 72.8 μmol per gram of support (11.3% by weight) for MCT-β-CD.
Keywords:Monocholorotriazinyl-β  -cyclodextrin  β  -Cyclodextrin  Grafting  Filter paper  DSC  TGA
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