Novel superabsorbent cellulose-based hydrogels crosslinked with citric acid
Corresponding Author
Christian Demitri
Innovation for Engineering Department, University of Salento, via per Monteroni, km 1,73100, Lecce, Italy
Innovation for Engineering Department, University of Salento, via per Monteroni, km1 73100, Lecce, Italy===Search for more papers by this authorRoberta Del Sole
Innovation for Engineering Department, University of Salento, via per Monteroni, km 1,73100, Lecce, Italy
Search for more papers by this authorFrancesca Scalera
Innovation for Engineering Department, University of Salento, via per Monteroni, km 1,73100, Lecce, Italy
Search for more papers by this authorAlessandro Sannino
Innovation for Engineering Department, University of Salento, via per Monteroni, km 1,73100, Lecce, Italy
Search for more papers by this authorGiuseppe Vasapollo
Innovation for Engineering Department, University of Salento, via per Monteroni, km 1,73100, Lecce, Italy
Search for more papers by this authorAlfonso Maffezzoli
Innovation for Engineering Department, University of Salento, via per Monteroni, km 1,73100, Lecce, Italy
Search for more papers by this authorLuigi Ambrosio
Department of Materials and Production Engineering, University of Naples “Federico II”, Piazzale Tecchio, 80 (80125) Naples, Italy
Search for more papers by this authorLuigi Nicolais
Department of Materials and Production Engineering, University of Naples “Federico II”, Piazzale Tecchio, 80 (80125) Naples, Italy
Search for more papers by this authorCorresponding Author
Christian Demitri
Innovation for Engineering Department, University of Salento, via per Monteroni, km 1,73100, Lecce, Italy
Innovation for Engineering Department, University of Salento, via per Monteroni, km1 73100, Lecce, Italy===Search for more papers by this authorRoberta Del Sole
Innovation for Engineering Department, University of Salento, via per Monteroni, km 1,73100, Lecce, Italy
Search for more papers by this authorFrancesca Scalera
Innovation for Engineering Department, University of Salento, via per Monteroni, km 1,73100, Lecce, Italy
Search for more papers by this authorAlessandro Sannino
Innovation for Engineering Department, University of Salento, via per Monteroni, km 1,73100, Lecce, Italy
Search for more papers by this authorGiuseppe Vasapollo
Innovation for Engineering Department, University of Salento, via per Monteroni, km 1,73100, Lecce, Italy
Search for more papers by this authorAlfonso Maffezzoli
Innovation for Engineering Department, University of Salento, via per Monteroni, km 1,73100, Lecce, Italy
Search for more papers by this authorLuigi Ambrosio
Department of Materials and Production Engineering, University of Naples “Federico II”, Piazzale Tecchio, 80 (80125) Naples, Italy
Search for more papers by this authorLuigi Nicolais
Department of Materials and Production Engineering, University of Naples “Federico II”, Piazzale Tecchio, 80 (80125) Naples, Italy
Search for more papers by this authorAbstract
This work is focused on the preparation of new environmentally friendly hydrogels derived from cellulose and hence originating from renewable resources and characterized by biodegradable properties. Two cellulose derivatives, sodium carboxymethylcellulose (CMCNa) and hydroxyethylcellulose (HEC), were used for superabsorbent hydrogel preparation. Citric acid (CA), a crosslinking agent able to overcome toxicity and costs associated with other crosslinking reagents, was selected in a heat activated reaction. Differential scanning calorimeter (DSC), fourier transform infrared spectroscopy (FTIR), and swelling measurements were performed during the reaction progress to investigate the CA reactivity with each of the polymers. Also, CMCNa/HEC polymer mixtures (3/1 w/w) crosslinked with CA were investigated and compared with previous results. Finally, a possible reaction mechanism was proposed. © 2008 Wiley Periodicals, Inc. J Appl Polym Sci, 2008
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