Author/Authors :
EL-HEFIAN, ESAM A. university of malaya - Faculty of Science - Department of Chemistry, Malaysia , KHAN, RASHID ATTA university of malaya - Faculty of Science - Department of Chemistry, Malaysia , YAHAYA, ABDUL HAMID university of malaya - Faculty of Science - Department of Chemistry, Malaysia
Abstract :
The temperature and storage time dependence of the viscosity of chitosan in a number of solvents (formic, acetic and propionic acids solutions) was determined. The temperature effect was studied over a temperature range of 20 °C to 50 °C while the storage time effect was examined at room temperature for a duration ranging between one to four days. The effect of chain length of the solvents on the viscosity of chitosan solutions was also investigated. Remarkable change in theviscosity of chitosan solutions was observed by varying the temperature, storage time and chainlength of the solvents thus concluding that in the suitable design of experimental conditions theseparameters play a vital role.
