LAYER-BY-LAYER SELF-ASSEMBLY APPROACH IN THE UV PROTECTIVE MODIFICATION OF ARAMID-BASED MATERIALS

Abstract

This paper presents the Layer by Layer self-assembly (LbL) approach for developing the UV resistance of aramid yarns. Initially, a pretreatment was achieved by polyethyleneimine to obtain cationic surface charges on aramid yarns. Then zinc oxide and titanium dioxide nanoparticles were self-assembled on these yarns by the LbL process. The findings revealed that the LbL nano coatings significantly improved the UV resistance and tensile properties of the aramid yarns. This study highlights the unique opportunities offered by the LbL methodology to both modify aramid-based materials in mild conditions and provide an effective UV protection.