The Effect of Some Solvents on the Morphology and Dye Up-Take of Cellulose and Regenerated Cellulose Fabrics
Lawal, A.S; John, A.C

Abstract
The grey cellulose (cotton) and regenerated cellulose (viscose rayon) fabrics of the same fabric particular were desized, scoured and bleached. Solvent treated under reflux and then dyed to the same shade with direct dye. The effect of solvent such as methanol, ethanol, propan-1-o1, chloroform, sodium hydroxide and water were investigated using Durazol R-150 a direct-dye. The adequate solvent to specimen ratio is 25:1 for the best result obtained. During refluxing the temperature range used was important especially in the use of chloroform where great care must be taken because of its high volatility. The effect of sodium hydroxide on both viscose rayon and cotton is very good and encourage dye up take to greater level. This is followed by those of alcohols, water also have outstanding effect on cotton fabric but less effect on viscose rayon and finally chloroform has good effect on viscose rayon but less effect on cotton.

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