Article
Licensed
Unlicensed Requires Authentication

Superabsorbent hydrogels of poly(sodium acrylate) with crude and exfoliated vermiculites

  • , EMAIL logo , and
Published/Copyright: January 5, 2013
Become an author with De Gruyter Brill
Submit Manuscript Author Information
Journal of Polymer Engineering
From the journal Journal of Polymer Engineering Volume 33 Issue 1

Abstract

Novel superabsorbent hydrogels of poly(sodium acrylate) [poly(SA)] with crude vermiculite (CVMT) and exfoliated vermiculite (EVMT) were synthesized and characterized by Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), transmission electron microscopy (TEM) and thermogravimetric analysis (TGA). Both types of hybrids are more stable materials than poly(SA) and their thermal stability increases as the clay content increases. The equilibrium water absorbency for each hybrid type varies with the clay content, showing a maximum at 15 wt% and 20 wt% for EVMT and CVMT, respectively. The equilibrium water absorbency is higher for the hybrids than for poly(SA) at clay contents close to their maxima. The swelling kinetics obey a Voigt-based equation. The water desorption kinetics showed the existence of free water and bound water within the polymeric matrix. All of the superabsorbent materials investigated retained the water absorption capacity after repeating five wet-dry cycles.

Keywords: composite; nanocomposite; superabsorbents; vermiculite
Corresponding author Francisca Santiago: Departamento de Química Física, Escuela de Ingeniería de Minas e Industriales, Universidad de Castilla-La Mancha, Plaza de Manuel Meca s/n, 13400 Almadén, Spain
Received: 2012-8-10
Accepted: 2012-11-21
Published Online: 2013-01-05
Published in Print: 2013-02-01

©2013 by Walter de Gruyter Berlin Boston

Articles in the same Issue

  1. Masthead
  2. Masthead
  3. Original Articles
  4. Die drool theory
  5. Melt extrudate swell behavior of POM/EVA/HDPE/nano-CaCO3 composites
  6. Preparation and characterization of poly(2-hydroxyethyl methacrylate)/ Na-montmorillonite intercalated nanocomposites
  7. Drying of polyacrylamide-multiwalled carbon nanotube (MWNT) composites with various MWNTs contents: a fluorescence study
  8. Using the Agrawal integral equation to study the thermal degradation of polyvinyl acetate-montmorillonite-dioctadecyl dimethyl ammonium bromide
  9. Effect of solvents and thermal annealing on the morphology development of a novel block copolymer ionomer: a case study of sulfonated polystyrene-block-fluorinated polyisoprene
  10. Superabsorbent hydrogels of poly(sodium acrylate) with crude and exfoliated vermiculites
  11. Cation exchange characterizations of phosphotungstic acid-doped polyvinyl alcohol/polyethersulfone blend membranes by sodium chloride solution
  12. The impact of selected granulometric properties of poly(vinyl chloride) on the effectiveness of the extrusion process
  13. Study on thermal properties of polyurethane-urea elastomers prepared with different dianiline chain extenders
https://doi.org/10.1515/polyeng-2012-0091
Keywords for this article
composite; nanocomposite; superabsorbents; vermiculite

Articles in the same Issue

  1. Masthead
  2. Masthead
  3. Original Articles
  4. Die drool theory
  5. Melt extrudate swell behavior of POM/EVA/HDPE/nano-CaCO3 composites
  6. Preparation and characterization of poly(2-hydroxyethyl methacrylate)/ Na-montmorillonite intercalated nanocomposites
  7. Drying of polyacrylamide-multiwalled carbon nanotube (MWNT) composites with various MWNTs contents: a fluorescence study
  8. Using the Agrawal integral equation to study the thermal degradation of polyvinyl acetate-montmorillonite-dioctadecyl dimethyl ammonium bromide
  9. Effect of solvents and thermal annealing on the morphology development of a novel block copolymer ionomer: a case study of sulfonated polystyrene-block-fluorinated polyisoprene
  10. Superabsorbent hydrogels of poly(sodium acrylate) with crude and exfoliated vermiculites
  11. Cation exchange characterizations of phosphotungstic acid-doped polyvinyl alcohol/polyethersulfone blend membranes by sodium chloride solution
  12. The impact of selected granulometric properties of poly(vinyl chloride) on the effectiveness of the extrusion process
  13. Study on thermal properties of polyurethane-urea elastomers prepared with different dianiline chain extenders
Downloaded on 12.4.2026 from https://www.degruyterbrill.com/document/doi/10.1515/polyeng-2012-0091/html
Scroll to top button