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Synthesis, characterization and swelling behavior of chitosan-sucrose as a novel full-polysaccharide superabsorbent hydrogel

Pourjavadi, A ; Sharif University of Technology | 2008

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  1. Type of Document: Article
  2. DOI: 10.1002/app.28369
  3. Publisher: 2008
  4. Abstract:
  5. A novel full-polysaccharide hydrogel was prepared by crosslinking of chitosan with periodate-oxidized sucrose. A tetraaldehyde molecule is synthesized via periodate oxidation of sucrose and then applied as a crosslinking agent to form a new hydrogel network. A mechanism for the superabsorbent hydrogel formation via reductive N-alkylation was also suggested. The structure of the hydrogel was confirmed by FTIR spectroscopy, scanning electron microscopy (SEM), and thermogravimetric analysis (TGA). It is shown that crosslinking of chitosan can improve its thermal stability. The effects of crosslinker concentration, pH, and inorganic salt on the swelling behavior of the hydrogel were studied. The results indicate that the hydrogel has good pH sensitivity and pH reversible response. The smart hydrogels may have potential applications in the controlled delivery of bioactive agents and for wound-dressing application © 2008 Wiley Periodicals, Inc
  6. Keywords:
  7. Agents ; Amines ; Chemical oxygen demand ; Chitin ; Chitosan ; Colloids ; Concentration (process) ; Fourier transform infrared spectroscopy ; Gravimetric analysis ; Hydrocarbons ; Microscopic examination ; Oxidation ; pH effects ; Photoresists ; Polysaccharides ; Sugar (sucrose) ; Synthesis (chemical) ; Thermogravimetric analysis ; Bioactive agents ; Controlled deliveries ; Crosslinker concentrations ; Crosslinking agents ; FTIR spectroscopies ; Hydrogel networks ; Inorganic salts ; Periodate oxidation ; Periodate oxidations ; pH sensitivities ; Polysaccharide hydrogels ; Potential applications ; Smart hydrogels ; Sucrose ; Superabsorbent ; Superabsorbent hydrogels ; Swelling behaviors ; Thermal stabilities ; Hydrogels ; Cross linking agent ; Hydrogel ; Scanning electron microscopy ; Swelling ; Synthesis ; Thermal stability
  8. Source: Journal of Applied Polymer Science ; Volume 109, Issue 4 , 15 August , 2008 , Pages 2648-2655 ; 00218995 (ISSN)
  9. URL: https://www.onlinelibrary.wiley.com/doi/abs/10.1002/app.28369