Abstract

At present, research is actively being conducted into composite materials using natural fibers and thermoplastic resins that can serve as eco-friendly materials. However, the weak interfacial bonding shape between natural fibers and thermoplastic resins leads to low mechanical properties in the natural fiber-reinforced polymer composite. This study examined the usage of basalt fibers (BFs) and polypropylene (PP) to address this issue. Plasma surface modification (PSM) was performed on the surface of the BF to improve the interfacial bonding force between the fiber and the thermoplastic resin. Studies on monomer selection (HMDSO), plasma generation conditions (3 kV), and surface modification time (20–150 s) were conducted to determine the optimal conditions for PSM. FT-IR analysis was performed to confirm the surface modification and the fracture surface was observed after the mechanical properties were measured. The experimental results confirmed the effect of PSM on the BF resulting in about 10% improvement on the related mechanical properties.

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