Due to the environmental awareness, researchers are focusing to replace the synthetic with natural fibers. However, the use of natural fibers has certain limitations like limited to geographical location, hydrophobicity, and compatibility. To overcome these, the current research presents a new novel resource of natural fiber from Morinda citrifolia as a cleaner material and bridges the gap between the materials and sustainability. The fibers were subjected to chemical treatments like NaOH, silane, and nitric acid to improve its compatibility and four different composites were developed, respectively using bio-epoxy to promote the bio-based concept. The physical, mechanical, thermal, viscoelastic, and morphological properties of the fibers and composites were analyzed and studied according to ASTM. The mechanical results revealed that the chemical treatments improved the tensile and flexural strength by 14.372% and 46.716%, respectively. Surface roughness plots showed improved roughness for NaOH and Nitric acid-treated fibers. The thermal stability of the silane and NaOH treated fibers was improved by 6.785% and 5.583% respectively. Lifetime of the best performed composite under dynamic loading is analyzed and studied through fatigue test. Finally, from the results, it was found that Morinda citrifolia fiber is a novel potential resource of sustainable raw material for reinforcement in polymer composites and can be used to develop lightweight structural applications.

由于环保意识，研究人员正专注于用天然纤维代替合成纤维。然而，天然纤维的使用具有一定的局限性，例如受地理位置、疏水性和相容性的限制。为了克服这些，目前的研究提出了一种新的海巴戟天然纤维资源作为一种更清洁的材料，弥合了材料与可持续性之间的差距。纤维经过NaOH、硅烷和硝酸等化学处理以提高其相容性，并开发了四种不同的复合材料，分别使用生物环氧树脂来推广生物基概念。根据 ASTM 对纤维和复合材料的物理、机械、热、粘弹性和形态特性进行了分析和研究。力学结果表明，化学处理使拉伸强度和弯曲强度分别提高了 14.372% 和 46.716%。表面粗糙度图显示 NaOH 和硝酸处理过的纤维的粗糙度有所改善。硅烷和NaOH处理过的纤维的热稳定性分别提高了6.785%和5.583%。通过疲劳试验分析和研究动态载荷下性能最佳的复合材料的寿命。最后，从结果中发现，巴戟天纤维是用于聚合物复合材料增强的可持续原材料的新型潜在资源，可用于开发轻质结构应用。