Synthesis and evaluation of modified starch-based thickeners for enhanced textile finishing applications

Thickeners are vital components in textile finishing processes because they help stabilize dye and auxiliary chemical applications. While alginate-based thickeners have traditionally been preferred for their effective performance, their high cost and limited availability, especially in non-coastal regions such as Uzbekistan, necessitate the search for viable alternatives. This study explores the applicability of modified starches as accessible, low-cost substitutes for alginates. Using theoretical analysis and data from prior experimental research, we examine different starch modification techniques, including oxidation, esterification, and cationization. Emphasis is placed on evaluating the viscosity, stability, and dye compatibility of the resulting materials. Among the forms being assessed, carboxymethylated and oxidized starches demonstrated favorable rheological characteristics and thermal resistance. A comparative discussion with alginate performance in textile printing is presented, and the most promising modification route is identified for prospective industrial use. These findings contribute to the development of more sustainable and economically practical thickener options in textile processing.

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