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<p>Hibiscus sabdariffa root fiber (HSRF) was extensively studied for the first time to identify its potentiality to utilize as reinforcements in composites. The anatomical, physical, chemical, morphological, tensile, and thermal qualities of HSRFs were analyzed to identify its reinforcement ability. The anatomical structure was inspected with optical and scanning electron microscope, which disclosed the existence of cortical and phloem fibers. The honeycomb structure of HSRF has a middle lamella, large cell lumen, and primary and secondary cell walls. The chemical analysis of fiber reveals the presence of high cellulose concentration (82.26%), a low level of lignin (7.69%), and insignificant wax content (0.2%). XRD analysis of HSRFs unveils the crystallinity index and crystallite size as 54.9% and 5.36 nm, respectively. The tensile strength of HSRFs was on par with other bio fibers at approximately 652 MPa. The thermogravimetric measurement validates fiber’s thermal stability until 250 °C that is high enough to endure the polymerization process. The outcomes of experiments reveal the magnificent potentiality of HSRFs to serve as reinforcement in composites.</p>

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Extensive Analysis of Plant Fibers from Hibiscus Sabdariffa Root

  • 期刊论文

  • 发表日期：

    2026年3月18日

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  • V. S. Sreenivasan,
  • S. Garette Jebadurai,
  • R. Edwin Raj,
  • S. Selvi

摘要

Hibiscus sabdariffa root fiber (HSRF) was extensively studied for the first time to identify its potentiality to utilize as reinforcements in composites. The anatomical, physical, chemical, morphological, tensile, and thermal qualities of HSRFs were analyzed to identify its reinforcement ability. The anatomical structure was inspected with optical and scanning electron microscope, which disclosed the existence of cortical and phloem fibers. The honeycomb structure of HSRF has a middle lamella, large cell lumen, and primary and secondary cell walls. The chemical analysis of fiber reveals the presence of high cellulose concentration (82.26%), a low level of lignin (7.69%), and insignificant wax content (0.2%). XRD analysis of HSRFs unveils the crystallinity index and crystallite size as 54.9% and 5.36 nm, respectively. The tensile strength of HSRFs was on par with other bio fibers at approximately 652 MPa. The thermogravimetric measurement validates fiber’s thermal stability until 250 °C that is high enough to endure the polymerization process. The outcomes of experiments reveal the magnificent potentiality of HSRFs to serve as reinforcement in composites.