Research on the Corrosion Modification Mechanism and Application of Polypropylene Fibers Based on a Combined System of Plasma Pretreatment and Chemical Etching

Polypropylene (PP) fibers, despite their advantageous properties, are limited by surface inertness and low chemical activity. This study develops a controllable modification technology using a combined plasma pretreatment and chemical etching system. The proposed "plasma activation-chemical etching synergy" mechanism first activates the fiber surface via plasma treatment, creating active sites. Subsequent chemical etching then constructs micro-nano rough structures and exposes more active groups. An experimental plan is designed to optimize this process and characterize the results using SEM, XPS, contact angle measurement, and tensile testing. Theoretically, this approach is expected to significantly enhance surface reactivity and wettability while maintaining mechanical properties, providing an efficient pathway to expand PP fiber applications in functional materials.