DETERMINATION OF THE CONCENTRATION OF CHITOSAN IN POWDER BY CAPILLARY VISCOSIMETRY

  • Agustín A. Rodríguez Llegado Autor
  • Jesús A. Cjuno H Autor
DOI: https://doi.org/10.37761/rsqp.v86i1.269
Keywords: chitosan, viscosity, pH, concentration

Abstract

The objective of this work has been to develop a procedure for the determination of the concentration of chitosan in powder samples, by capillary viscosimetry of Ostwald (capillary of 0.55 ± 0.02 mm internal diameter). Standard chitosan solutions between 461 mg/liter up to 9138 mg/liter and pH 1.24 were prepared for all cases. Tests were also carried out at temperatures between 20° to 50°C, observing linearity with the concentration until before 9138 mg/liter. The most important dependence was the relative viscosity (ηr) versus the concentration (concordant with the Poiseuille equation) which in the range 461 mg/liter to 2808 mg/liter gave a linear dependence with r2= 0.995, enabling the analysis of samples for the content of chitosan with consistent results and comparable with the referentials.

Downloads

Download data is not yet available.

Author Biographies

Agustín A. Rodríguez Llegado, Autor

Faculty of Chemistry and Chemical Engineering, UNMSM. Av. Universitaria / Av. Germán Amézaga s/n Lima-1, Perú

Jesús A. Cjuno H, Autor

Fractal Químicos E.I.R.L. www.fractalquímicos.pe

Published
2020-03-31
Issue
Vol. 86 No. 1 (2020): Journal of Sociedad Química del Perú
Section
Artículos

Copyright (c) 2020 Sociedad Química del Perú

Creative Commons License

This work is licensed under a Creative Commons Attribution 4.0 International License.

Revista Arbitrada
Derechos reservados: Prohibido el uso total o parcial del material de esta revista sin indicar la fuente de origen.
Nota: Las referencias comerciales que aparecen en los trabajos no constituyen una recomendación de la
Sociedad Química del Perú