A Novel Approach to Dye Cotton Goods without Using Electrolyte

The current study centers on eliminating salt in the dyeing process of cotton products using reactive dyes. This study identified that the usage of reactive dyes is generating a huge amount of waste products that are contaminating the environment. Hence, this study introduces salt-free reactive dyes that can be used on cotton and would not contribute to ecological contamination. The prime purpose of this study was to explore a promising approach to reduce the cost of the dying process. Therefore, this study proposed the fiber modification technique based on chitosan and 1,2 dichloroethane as a proposed method for dying cotton, which will eventually help in reducing disposal and hazardous waste generated by salt-based chemicals. When the fabric is subjected to a treatment involving polyacrylamide, it causes cellulose to exhibit the main characteristics of wool. As a result, cotton can be dyed using reactive dyes under neutral pH conditions, without the need for electrolyte and alkali. Similarly, when fabric is treated with an emulsion of 1,2 dichloroethane followed by amination with sodium hydroxide, the treatment was discovered to enhance color fixation also. The modification was investigated through in-depth analysis in this research.