TY - JOUR A1 - Hartung, David A1 - Seidlitz, Holger A1 - Osiecki, Tomasz A1 - Sztorch, Bogna A1 - Przekop, Robert E. A1 - Kazimierczuk, Magdalena T1 - Flax fiber reinforced PET-G composites with improved interfacial adhesion JF - Polimery N2 - Recycled PET-G (rPET-G) composites reinforced with flax fiber were obtained. To improve interfacial adhesion, the fiber was treated by washing and finishing with bio-based epoxidized soybean oil and admixture acid. The effect of fiber surface treatment on its properties and those of the composites was evaluated by TGA, FT-IR and SEM, as well as by contact angle, flexural and tensile measurements. The results indicated delayed degradation of the treated flax fiber with a fiber mass loss of about 4 wt%. The flexural strength and modulus increased for the washed and finished flax fiber compared to the untreated one. While the tensile properties were influenced by structural effects resulting from the fiber treatment. These findings contribute to the development of more sustainable and high-performance natural fiber-reinforced thermoplastic composites. KW - natural fibers KW - composites KW - epoxidized soyabean oil KW - admergin acid Y1 - 2025 U6 - https://doi.org/10.14314/polimery.2025.2.4 SN - 2957-0263 VL - 70 IS - 2 SP - 113 EP - 123 PB - LUKASIEWICZ Research Network - Industrial Chemistry Research Institute CY - Warsaw ER -