Hostname: page-component-78c5997874-v9fdk Total loading time: 0 Render date: 2024-11-10T08:35:39.446Z Has data issue: false hasContentIssue false
  • English
  • Français

Effect of the Cross-Linking with Calcium Ions on the Structural and Thermo-Mechanical Properties of Alginate Films

Published online by Cambridge University Press:  19 July 2011

Turner K. Vidal Urquiza ,
O. Perales Pérez  and
M. Gálvez Saldaña
Turner K. Vidal Urquiza
Affiliation:
University of Puerto Rico, Department of Mechanical Engineering, P.O. Box 9045, Mayagüez, P.R. 00681-9045-9000
O. Perales Pérez
Affiliation:
University of Puerto Rico, Department of Engineering Science & Materials, P.O. Box 9044, Mayagüez, P.R. 00681-9044
M. Gálvez Saldaña
Affiliation:
University of Puerto Rico at Mayagüez, Department of Physics, Mayagüez P.R. 00980
Get access

Abstract

The present research discusses the thermal and structural properties of calcium alginate films synthesized by cross linking precursor sodium alginate films with Ca2+ ions. Raman and FTIR spectroscopy analyses evinced the interchange of Na ions with Ca ions. Both techniques revealed a shift of the COO- vibration modes; the symmetrical COO- peak of calcium alginate exhibited a shift towards higher wavenumber (∼14 cm−1) from 1415 cm−1 to 1429 cm−1 in the Raman spectra. TGA and TMA analyses performed under a nitrogen atmosphere revealed that increasing the Ca-molarity and immersion time resulted in an increase in the glass transition temperature (Tg) and the strain deformation of the Ca-alginate film. The increase in Tg can be attributed to the Ca-cross-linking that could restrict the molecular response to temperature change whereas the increased strain could be due to the enhanced entrapment of water between the molecular chains of the polymer.

Keywords

polymercoatingfilm
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 1355: Symposium JJ – Biological Hybrid Materials for Life Sciences , 2011 , mrss11-1355-jj06-16
Copyright
Copyright © Materials Research Society 2011

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

REFERENCES

1. Sabra, Wael., D, W.-D.., Alginate—A Polysaccharide of Industrial Interest and Diverse Biological Functions, inPolysaccharides. 2005, CRC Press: Egypt, Germany.Google Scholar
2. Sartori, Celine, F, D.S.., Ralph, Brian and Gilding, Keith, Determination of the cation content of alginate thin films by FTi.r. spectroscopy. POLYMER, 1996. 38(1): p. 43–51.10.1016/S0032-3861(96)00458-2Google Scholar
3. Ingar Draget, Kurt, M, S.T.., Skja°k-Bræk, Gudmund, and Smidsrød, Olav, Food Polysaccharides and Their Applications. Second ed. 2006: Taylor & Francis Group, LLC.Google Scholar
4. Suzuki, H.S.a.A., Adsorption of Lead Ions on Composite Biopolymer Adsorbent. Industrial & Engineering Chemistry Research, 1996. 35(4): p. 1378–1382.Google Scholar
5. Rhim, J.-W., Physical and mechanical properties of water resistant sodium alginate films. Elsevier Ltd., 2004. 37: p. 323–330.Google Scholar
6. Schauer, M.D.C.a.C.L., Structurally Colored Thin Films of Ca2+-Cross-Linked Alginat. American Chemical Society, 2007. 8: p. 33–41.Google Scholar
7. Yang, Guang, Z, L., Penga, Tao, Zhongb, Wei, Effects of Ca2+ bridge cross-linking on structure and pervaporation of cellulose/alginate blend membranes. Journal of Membrane Science, 2000. 175: p. 53–60.10.1016/S0376-7388(00)00407-5Google Scholar
8. Li, Liangbin, F, Y.., Vreeker, Rob, Appelqvist, Ingrid, and Mendes, Eduardo, Reexamining the Egg-Box Model in Calcium-Alginate Gels with X-ray Diffraction. Biomacromolecules, 2007. 8: p. 464–468.10.1021/bm060550aGoogle Scholar
9. Lawrie, Gwen, K, I.., Drew, Barry, Chandler-Temple, Adrienne, Rintoul, Llewellyn, Fredericks, Peter, and Grøndahl, Lisbeth, Interactions between Alginate and Chitosan Biopolymers Characterized Using FTIR and XPS. Biomacromolecules, 2007. 8(8): p. 2533–2541.10.1021/bm070014yGoogle Scholar
10. Schmid, Thomas, M., A.,Yeo, Boon-Siang, Zhang, Weihua and Zenobi, Renato, Towards chemical analysis of nanostructures in biofilms II: tip-enhanced Raman spectroscopy of alginates. Analytical and Bioanalytical Chemistry, 2008. 391: p. 1907–1916.10.1007/s00216-008-2101-1Google Scholar
11. Ivleva, Natalia P., W, M., Horn, Harald, Niessner, Reinhard and Haisch, Christoph, Towards a nondestructive chemical characterization of biofilm matrix by Raman microscopy. Analytical and Bioanalytical Chemistry, 2009. 393: p. 197–206.10.1007/s00216-008-2470-5Google Scholar