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Novel superabsorbent hydrogel based on natural hybrid backbone: optimized synthesis and its swelling behavior

Pourjavadi, A ; Sharif University of Technology | 2009

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  1. Type of Document: Article
  2. DOI: 10.5012/bkcs.2009.30.11.2680
  3. Publisher: 2009
  4. Abstract:
  5. The synthesis of a novel superabsorbent hydrogel with natural hybrid backbone via graft copolymerization of acrylamide (AAm) onto kappa-carrageenan (kC, as a polysaccharide) and gelatin (as a protein) under classic thermal conditions is described. The Taguchi method as a strong experimental design tool was used for synthesis optimization. A series of hydrogels were synthesized by proposed conditions of Qualitek-4 Software. Considering the results of 9 trials according to analysis of variance (ANOVA), optimum conditions were proposed. The swelling behavior of optimum hydrogel was measured in various solutions with pH values ranging from 1 to 13. In addition, swelling kinetics, swelling in various organic solvents, various salt solutions and On-Off switching behavior were investigated. The hydrogel formation was confirmed by Fourier transform infrared spectroscopy (FTIR) and thermogravimetrical analysis (TGA). Surface morphology of the synthesized hydrogels was assessed by scanning electron microscope (SEM)
  6. Keywords:
  7. Taguchi method ; Acrylamides ; Experimental design ; Graft copolymerization ; Hydrogel formation ; Kappa carrageenan ; Natural hybrid backbone ; Optimized synthesis ; Optimum conditions ; pH value ; Qualitek ; Salt solution ; Scanning electron microscopes ; Superabsorbent hydrogel ; Swelling behavior ; Swelling kinetics ; Switching behaviors ; Synthesis optimization ; Thermal condition ; Acrylic monomers ; Amides ; Analysis of variance (ANOVA) ; Copolymerization ; Fourier transform infrared spectroscopy ; Grafting (chemical) ; Organic solvents ; Polyvinyl alcohols ; Regression analysis ; Scanning electron microscopy ; Swelling ; Synthesis (chemical) ; Taguchi methods ; Hydrogels
  8. Source: Bulletin of the Korean Chemical Society ; Volume 30, Issue 11 , 2009 , Pages 2680-2686 ; 02532964 (ISSN)
  9. URL: http://koreascience.or.kr/article/JAKO200902727283830.page