Polymer Bulletin

, Volume 55, Issue 5, pp 367–375

Swelling behavior of chitosan/pectin polyelectrolyte complex membranes. Effect of thermal cross-linking



Membranes of the polyelectrolyte complex between chitosan and pectin were prepared by precipitating the complex from a mixture of both polysaccharides. It was shown that the swelling kinetics of these membranes follows a Fickean behavior. The membranes were heated at 120 °C in order to convert the –NH3+-OOC- salt bonds into amide bonds. The thermally treated membranes were stable in strongly acid and basic media. The extent of amide bond formation was followed by FTIR spectroscopy. It was found that as the reaction time increased, both the absorbance ratio A1744/A1082 and the maximum swelling of the membrane decreased. The surface morphology of the membranes did not vary appreciably with the thermal treatment.


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Copyright information

© Springer-Verlag 2005

Authors and Affiliations

  1. 1.Inst. Materiales y ReactivosUniversidad de La HabanaLa HabanaCuba
  2. 2.Centro de BiomaterialesUniversidad de La HabanaLa HabanaCuba
  3. 3.CIAD – Unidad GuaymasGuaymasMexico

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