Preparation and Characterization of Glutaraldehyde-Crosslinked Kappa Carrageenan Hydrogel

  • Sperisa Distantina Sebelas Maret University
  • Rochmadi Rochmadi Gadjah Mada University
  • Mohammad Fahrurrozi Gadjah Mada University
  • Wiratni Wiratni Gadjah Mada University
Keywords: Glutaraldehyde, crosslinked kappa carrageenan, hydrogel, swelling.

Abstract

Glutaraldehyde-crosslinked kappa carrageenan hydrogel was prepared using glutaraldehyde (GA) as the crosslinking agent. Kappa carrageenan film obtained from extraction of Kappaphycus alvarezii seaweed was immersed in GA solution (1 - 5 wt%) for 2 min and then cured at 110oC for 25 min. The obtained crosslinked film was washed and soaked in the ethanol to remove the unreacted GA. The obtained film was air dried at room temperature to a constant weight. The infrared spectra, thermal analysis, and the value of swelling degree of obtained hydrogel showed that kappa carrageenan was able to be crosslinked using GA by film immersion and high temperature curing method without catalyst presence. GA concentration less than 0.027 g GA/g polymer was not able to crosslink hydroxyls group of carrageenan. The swelling degree in water media decreased up to 60% with increasing GA concentration from 3% to 5%. The kappa carrageenan hydrogel was found to be pH sensitive.

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Author Biographies

Sperisa Distantina

Chemical Engineering Department, Gadjah Mada University, Jl. Grafika 2 Yogyakarta 55281, Indonesia
Chemical Engineering Department, Sebelas Maret University, Jl. Ir. Sutami 36 A Surakarta 57126, Indonesia

Rochmadi Rochmadi

Chemical Engineering Department, Gadjah Mada University, Jl. Grafika 2 Yogyakarta 55281, Indonesia

Mohammad Fahrurrozi

Chemical Engineering Department, Gadjah Mada University, Jl. Grafika 2 Yogyakarta 55281, Indonesia

Wiratni Wiratni

Chemical Engineering Department, Gadjah Mada University, Jl. Grafika 2 Yogyakarta 55281, Indonesia

Published In
Vol 17 No 3, Jan 17, 2013
How to Cite
[1]
S. Distantina, R. Rochmadi, M. Fahrurrozi, and W. Wiratni, “Preparation and Characterization of Glutaraldehyde-Crosslinked Kappa Carrageenan Hydrogel”, Eng. J., vol. 17, no. 3, pp. 57-66, Jan. 2013.