Abstract
This study describes the effects of chemical treatments with varying concentrations of ethylamine, ethylenediamine (EDA), potassium hydroxide (KOH), and lithium hydroxide (LiOH) on various properties of cotton fiber, such as crystallinity, moisture regain, DP, and tensile, mechanical, and optical properties. Concentrations of 70–90% EDA, 70% and higher ethylamine, 20% and higher KOH, and 7–10% LiOH showed marked changes in cellulose crystallinity and some other properties. Maximum change was produced by KOH and ethylamine, while EDA produced the least effect. Most of the treatments also reduced the DP, tensile strength at 0 gauge and birefringence values, but increased moisture regain, percent elongation and fiber toughness considerably.
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