STUDY OF THE DIFFUSION KINETICS IN HYDROGELS SYNTHESIZED FROM ACRYLAMIDE-CO-ACRYLIC ACID WITH PET AND STARCH BY CONVENTIONAL HEATING AND RADIATION MICROWAVES

Authors

  • Neudys Gonzalez Universidad de Oriente, Instituto de Investigaciones en Biomedicina y Ciencias Aplicadas, IIBCA-UDO, Cerro del Medio, Cumana, Estado Sucre, Venezuela
  • Jose Luis Prin Universidad de Oriente, Instituto de Investigaciones en Biomedicina y Ciencias Aplicadas, IIBCA-UDO, Cerro del Medio, Cumana, Estado Sucre, Venezuela
  • Jose Luis Benitez Universidad de Oriente, Nucleo de Sucre, Cumana, Estado Sucre, Venezuela
  • Arnaldo Ramírez Universidad de Oriente, Instituto de Investigaciones en Biomedicina y Ciencias Aplicadas, IIBCA-UDO, Cerro del Medio, Cumana, Estado Sucre
  • Alexander Garcia Universidad de Oriente, Instituto de Investigaciones en Biomedicina y Ciencias Aplicadas, IIBCA-UDO, Cerro del Medio, Cumana, Estado Sucre, Venezuela
  • Marvelis Ramírez Universidad de los Andes (ULA), Dpto. de Química, Grupo de Polímeros, Mérida, Venezuela
  • Marcos Sabino Universidad Simón Bolívar (USB), Dpto. de Química, Grupo B5IDA, Caracas, Venezuela
  • Blanca Rojas de Gascue Universidad de Oriente, Instituto de Investigaciones en Biomedicina y Ciencias Aplicadas, IIBCA-UDO, Cerro del Medio, Cumana, Estado Sucre, Venezuela

Abstract

In this work of investigation polymers were synthesized hydrogels from acrylamide (AAm), acid acrylic (AAc), peat and starch, by means of conventional  heating and low radiation microwaves.  Hydrogels hydration (swelling) kinetic parameters were determined using different models (Schott, Fick). The results obtained reflected that AAm-co-AAc/starch (F2) hydrogels synthesized of conventional way presented majors values of water content (m∞) 94,34%, in comparison with synthesized in microwaves AAm-co-AAc/starch (F2M) that  display values of m∞ 84,75%. On the other hand, the obtained results of the diffusion study reflected that hydrogels copolymers conventional showed a diffusion behaviour of the anomalous type. Whereas in the semi-IPN hydrogels, the presence of starch and peat transfer the n from 0,87 to n lower (between 0,4 and 0,5), controlled by a Fickian diffusion. Hydrogeles synthesized in the same conditions by microwaves, showed n smaller (between 0,3 and 0,4), because penetration rate is much below the polymer chain relaxation rate.

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Author Biography

Blanca Rojas de Gascue, Universidad de Oriente, Instituto de Investigaciones en Biomedicina y Ciencias Aplicadas, IIBCA-UDO, Cerro del Medio, Cumana, Estado Sucre, Venezuela

Coordinadora del Laboratorio de Polimeros del IIBCA-UDO. Ing. Materiales Polimeros, PhD en Quimica

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Published

2011-08-31

How to Cite

Gonzalez, N., Prin, J. L., Benitez, J. L., Ramírez, A., Garcia, A., Ramírez, M., Sabino, M., & Rojas de Gascue, B. (2011). STUDY OF THE DIFFUSION KINETICS IN HYDROGELS SYNTHESIZED FROM ACRYLAMIDE-CO-ACRYLIC ACID WITH PET AND STARCH BY CONVENTIONAL HEATING AND RADIATION MICROWAVES. LatinAmerican Journal of Metallurgy and Materials, 136–144. Retrieved from https://www.rlmm.org/ojs/index.php/rlmm/article/view/105

Issue

2012, 32(1)

Section

Regular Articles

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