Polymer Bulletin

, Volume 48, Issue 4, pp 361-366

Interpolymeric complexes of poly(itaconic acid) and chitosan

  • Cristóbal V LárezAffiliated withUniversidad de Los Andes, Facultad de Ciencias, Departamento de Química,Grupo de Polímeros, Mérida 5101, Venezuela email: clarez@ciens.ula.ve, Fax: +58-274-2401286
  • , Freddy CanelónAffiliated withUniversidad de Los Andes, Facultad de Ciencias, Departamento de Química,Grupo de Polímeros, Mérida 5101, Venezuela email: clarez@ciens.ula.ve, Fax: +58-274-2401286
  • , Enrique MillánAffiliated withUniversidad de Los Andes, Facultad de Ciencias, Departamento de Química,Grupo de Polímeros, Mérida 5101, Venezuela email: clarez@ciens.ula.ve, Fax: +58-274-2401286
  • , Issa KatimeAffiliated withUniversidad del País Vasco (UPV/EHU), Facultad de Ciencias (Campus de Leioa), Departamento de Química Física, Grupo de Nuevos Materiales, Bilbao, España.

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Summary

Polycomplexes of poly(itaconic acid) have been synthesized in the presence of small amounts of chitosan (eq. NH2/eq. COOH between 0 and 1.31%). We have studied the effect on the yield and polydispersity of the final materials when increasing quantities of chitosan are employed. Under the reported experimental conditions, we have found that chitosan is quantitatively incorporated into the new material to produce dramatic effects on the system behavior. It has been established a critical R-value beyond which a hidrogel is obtained. The electrostatic interactions between polyelectrolytes turn from irreversible to reversible when pH is made strongly basic.