Received: 15 January 2024 Revised: 12 March 2024 Accepted: 23 March 2024 DOI: 10.1111/ijac.14774 RESEARCH ARTICLE Barium titanate exposure on metallographic and mechanical performance of coir fiber made low-density polyethylene composite M. Aruna 1 Ismail Hossain 2 S. Kaliappan 3 S. Prabagaran 4 R. Venkatesh 5 Manzoore Elahi M. Soudagar 6 V. Mohanavel 7, 8 A. H. Seikh 9 P. Prabhu 10 1 Department of Industrial Management, Faculty of Business, Liwa College, Abu Dhabi, UAE 2 Department of Nuclear and Renewable Energy, Ural Federal University, Yekaterinburg, Russia 3 Division of Research and Development, Lovely Professional University, Phagwara, Punjab, India 4 Department of Mechanical Engineering, Karpagam Academy of Higher Education, Coimbatore, Tamil Nadu, India 5 Department of Mechanical Engineering, Saveetha School of Engineering, Saveetha Institute of Medical and Technical Sciences (SIMATS), Saveetha University, Chennai, India 6 Department of Mechanical Engineering, Graphic Era (Deemed to be University), Dehradun, Uttarakhand, India 7 Centre for Materials Engineering and Regenerative Medicine, Bharath Institute of Higher, Education and Research, Chennai, Tamil Nadu, India 8 Department of Mechanical Engineering, Amity University Dubai, Abu Dhabi, United Arab Emirates 9 Department of Mechanical Engineering, College of Engineering, King Saud University, Riyadh, Saudi Arabia 10 Department of Civil Engineering, Kongunadu College of Engineering and Technology, Trichy, Tamil Nadu, India Correspondence R. Venkatesh, Department of Mechanical Engineering, Saveetha School of Engineering, Saveetha Institute of Medical and Technical Sciences (SIMATS), Saveetha University, 602105 Chennai, Tamil Nadu, India. Email: venkisimats@gmail.com Funding information Tenaga Nasional Berhad (TNB) and Universiti Tenaga Nasional (UNITEN) Abstract Technological growth and biodegradable waste natural fibers are significant choices in polymer matrix composite preparation because of their distinct quali- ties from monopoly matrix. During the fabrication process, the natural fiber faces poor compatibility and lack of adhesive behavior, resulting in reduced tensile strength and stiffness of the composite. The theme of the research is expand- ing the mechanical behavior of low-density polyethylene (LDPE) composite by the exposure of sodium hydroxide-treated coir fiber (CF) and barium titanate (BaTiO 3 ) through an injection molding route. Influences of CF and BaTiO 3 on metallographic, tensile, flexural, and impact strength and microhardness of LDPE composite are evaluated, and its outcomes are compared with mono LDPE. The surface morphology of the developed composite is exposed to homogenous dispersion of BaTiO 3 with effective adhesive bonding with CF, which facilitates superior mechanical properties. The LDPE hybrid composite consists of 30 wt% CF and 2.5 wt% of BaTiO 3 and is exploited about 69 ± 1.5 MPa of tensile strength, 54 ± 0.5 MPa of flexural strength, 4.9 ± 0.01 J of impact energy, and 31 ± 1.5HV of microhardness, this is greater than the mono LDPE (unreinforced). The enriched LDPE hybrid composite is suggested for automotive dashboard applications. KEYWORDS barium titanate, coir fiber, injection mold, low-density polyethylene, performance analysis 3476 © 2024 The American Ceramic Society. Int J Appl Ceram Technol. 2024;21:3476–3484. wileyonlinelibrary.com/journal/ijac