Comparative Performance of Flax Fibers and Ramie Fibers Reinforced Functionalized Polypropylene Composites 


Vol. 26,  No. 4, pp. 1745-1763, Apr.  2025
10.1007/s12221-025-00891-7


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  Abstract

Flax fiber (FLX) and ramie fiber (RMI) reinforced chemically functionalized polypropylene (CF-PP) composites (FLX/CF-PP and RMI/CF-PP) have been developed by extrusion followed by injection molding. Composites with 10, 20, and 30 wt.% fiber content were fabricated and characterized for both composite systems. FE-SEM and FTIR analysis confirmed good reinforcement-matrix adhesion in both systems, attributed to the formation of ester bonds and hydrogen bonds, formed between the reinforcements and the matrix by the Palsule process. The 30/70 FLX/CF-PP composition showed the best overall performance with approximately 49% higher tensile strength, 71% higher tensile modulus, 42% higher flexural strength, and 118% higher flexural modulus compared to the pristine CF-PP matrix. The same composition also demonstrated 57% higher impact strength than the matrix. All FLX/CF-PP composite compositions show higher mechanical properties compared to respective RMI/CF-PP composite compositions; despite, both, FLX and RMI having similar holo-cellulose contents. This superior performance is attributed to the higher aspect ratio of flax fibers. Water absorption increased with fiber content for both composites, with the 30/70 compositions of FLX/CF-PP and RMI/CF-PP showing maximum absorption of approx. 0.79% and 0.76% respectively after one week. Thermo-gravimetric analysis showed both composites exhibit thermal stability between the CF-PP (380 °C) matrix and reinforcing FLX or RMI (281–290 °C). 30/70 FLX/CF-PP offers the most promising performance and sustainability, amongst all the compositions.

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  Cite this article

[IEEE Style]

M. Pant and S. Palsule, "Comparative Performance of Flax Fibers and Ramie Fibers Reinforced Functionalized Polypropylene Composites," Fibers and Polymers, vol. 26, no. 4, pp. 1745-1763, 2025. DOI: 10.1007/s12221-025-00891-7.

[ACM Style]

Mridul Pant and Sanjay Palsule. 2025. Comparative Performance of Flax Fibers and Ramie Fibers Reinforced Functionalized Polypropylene Composites. Fibers and Polymers, 26, 4, (2025), 1745-1763. DOI: 10.1007/s12221-025-00891-7.

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