?THE EFFECT OF AMINo" ACIDS ONTHE ADSORPTION OF DIRECT RED ON CELLULOSE FIBRES

Authors

  • Shahina Waheed Applied Chemistry Research Centre, PCSIR Laboratories Complex, Lahore-54600, Pakistan
  • M.Farooq Arif Applied Chemistry Research Centre, PCSIR Laboratories Complex, Lahore-54600, Pakistan
  • Badruddin Khan Applied Chemistry Research Centre, PCSIR Laboratories Complex, Lahore-54600, Pakistan

Keywords:

Direct red dye, Amino acids, Cellulose fibre, Dyeing rate.

Abstract

Equilibrium adsorption isotherms and rates of dyeing for Direct Red on cotton fibres pretreated with solutions of Valine,
Threonine, Proline and Histidine in aqueous acetic acid were measured. Amino acid treatment increased the rate of
dyeing with Direct Red and improved the wet fastness properties of the dyed cotton. At lower concentrations of amino
acids, the order of exhaustion value was Threonine> Valine> Proline> Histidine whereas at higher concentrations, the
order changed as Threonine> Proline> Valine> Histidine.

Published

1998-06-22

How to Cite

Waheed, S., Arif, M., & Khan, B. (1998). ?THE EFFECT OF AMINo" ACIDS ONTHE ADSORPTION OF DIRECT RED ON CELLULOSE FIBRES. Biological Sciences - PJSIR, 41(3), 145–150. Retrieved from https://v2.pjsir.org/index.php/biological-sciences/article/view/2256