Kanakannavar, S.Jeyaraj, J.2026-02-042022Journal of Natural Fibers, 2022, 19, 15, pp. 11124-1113715440478https://doi.org/10.1080/15440478.2021.2009405https://idr.nitk.ac.in/handle/123456789/22848The present study focuses on the development of biodegradable composites to replace synthetic polymer-based composites for potential lightweight structural applications in the automobile, aeronautical, marine, and packaging industries. Initially, PLA and NFBF/PLA films are prepared by solution casting, and from these films, composite laminates are prepared by film sequencing and compression (hot-press) molding methods. First, the critical buckling load (P<inf>cr</inf>) of composites is analyzed, and then, the influence of compressive load on natural frequency is studied. The critical buckling load-bearing capacity of PLA is enhanced with the reinforcement of NFBF (natural fiber braided yarn fabric). The composite with three layers of NFBF registered the highest critical-buckling load (P<inf>cr</inf>) of 374.19 N, and this value is 172.13% high compared to the virgin PLA. Similarly, the natural frequency of the NFBF composites approaches minimum when the applied load is equal to the corresponding P<inf>cr</inf>. However, a significant increase in the fundamental frequency is noticed when the applied load is higher than the P<inf>cr</inf>. © 2021 Taylor & Francis.Biodegradable polymersBucklingComposite filmsFilm preparationLaminated compositesMarine applicationsNatural frequenciesWoolApplied loadsBiocompositeBiodegradable compositesBraided fabricsBraided yarn fabricBuckling strengthCritical buckling loadsFree vibrationPLASynthetic polymersYarnCompositesCompressionFrequencyLoadsSynthetic Polymers