Formulations and performance of eco-friendly raw starch sizing process

In response to the green development concept of the textile industry, this article describes the development of a biodegradable and eco-friendly raw starch sizing agent formulation. The sizing agent performance, sizing quality, biodegradation, weave efficiency, and production cost of the raw starch formulation in raw starch sizing process were compared with three other formulations. The results showed that the formulation prepared with raw starch achieved a lower viscosity and higher stability compared with the other three formulations. The raw starch sizing exhibited excellent moisture regain, moisture absorption performance and breaking strength, high enhancement rate and low elongation, high penetration, low coating, and abrasion resistance. The raw starch formulation was shown to be energy-saving and environmentally friendly, with higher weave efficiency and lower production costs. The BOD5/COD was 0.65, which means that the desizing wastewater is easy to degrade. Sizing agent cost was 17 to 61% lower and loom efficiency was 5% to 12% higher. This research provides a theoretical basis for promoting the usage of raw starch sizing in practical production, which contributes to green and eco-friendly processing.