A review on Borassus flabellifer lignocellulose fiber reinforced polymer composites

•Analysis and characterization of Borassus flabellifer fibers have been discussed.•The effect of bio-coupling agent and bio-polymers with BFF composites highlighted.•Potential application of BFF composites and NFC uses in biological field studied.•The effect of parameters on the properties of BF fiber composites highlighted.•Employment creation in rural areas by using BF waste have been recommended. Natural fiber composites play an important role for developing high performance engineering materials due to its facile availability, recyclability and eco-friendly nature. Borassus flabellifer products are significant and economical for urban and rural areas, and its fruit, leaf stalk and leaves are used in domestic purposes and some of them are disposed as waste. This waste part of Borassus flabellifer serves as a potential resource for natural fibers and utilized as raw material for reinforced polymer composites. The aim of this article narrates a comprehensive overview of Borassus fibers and its composites. Alkali treatment techniques, different fabrication methods, preparation of different matrices reinforced with bio-fibers and chemical, mechanical, thermal, morphological properties of Borassus fibers and its composites have been studied. Overall, this review article highlights, investigates and identifies gaps of the earlier research work, and provides the resourceful data for future work in various streams with Borassus fiber as reinforcement.