Preparation of ultra-durable fluorescent hyperbranched polysiloxane functionalized PET fabric by EB radiation curing

It is a significant challenge to endow polyethylene terephthalate (PET) fabric with functional coating while simultaneously overcoming its poor interfacial bonding strength and functional attenuation in harsh chemical environments; however, to date, no such related work has emerged in the literature. Herein, a new type of surface-modified PET fabric coated with hyperbranched polysiloxane fluorescence (Frs-HBPSi), was fabricated via electron beam (EB) curing methodology. The influence of Frs-HBPSi loading on the comprehensive performance, fluorescence intensity, and heat resistance of PET@EBC-HBPSi was intensively investigated and its fluorescence durability was compared with that of a UV-cured fluorescent fabric (PET@UVC-HBPSi) under identical conditions. The results demonstrate that the EB-cured PET fluorescent material possesses excellent fluorescence intensity and durability under harsh conditions, along with a high curing degree of 96 %. Notably, even after prolonged immersion (4 days) in organic solvents and acidic or basic solutions (2 M), the fluorescent coating remains intact due to the covalent bonding that prevents it from peeling off. Compared to traditional coating, this eco-friendly method produces durable fluorescent fabrics and highlights the potential of combining EB curing with conventional dyeing to create customized multifunctional textiles.