Homologous flame retardant - cottonseed meal modified as a flame retardant for cotton fiber durable flame retardancy

Cotton fibers are widely used in various applications due to their biodegradability, low cost, and extensive availability. The cottonseed is associated with cotton, which has a large yield. After oil extraction, the remaining cottonseed meal has a high protein content, making it a potential flame retardant for cotton fibers. This paper proposes the concept of homologous flame retardant for cotton fiber, and presents research on Cottonseed Meal Modified Flame Retardant - Homologous Durable Flame Retardant Cotton Fiber. The experiment results showed that the flame retardants CmP prepared by phosphating cottonseed meal is an effective flame retardant for cotton fiber. Both CmP1 and CmPN demonstrated self-catalytic durable grafting on the surface of Cotton fiber. Notably, the durable flame retardant CmP1-cotton and CmPN-cotton prepared by DICY catalysis exhibit superior durability and flame retardant properties, with damage lengths of 53 mm and 86 mm, respectively, and the LOI value is more than 35 %. FT-IR, XPS, and SEM results confirmed that the flame retardant was durably grafted onto the fiber surface and the superficial layer. XPS and SEM results of flame retardant cotton and char residues of TG and CCT are displayed that the two kinds of flame retardant cotton fabrics are mainly condensed phase flame retardant mechanisms, with a synergistic gas-phase effect.