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<p>With the advancement of polymer research, natural fibers are playing a prominent role in the development of biodegradable polymer composites, which are suited for automotive interior and exterior applications. It has certain drawbacks, including the hygroscopic nature of the natural fiber, poor fiber-matrix adhesion, and lower tensile strength. The objective of the investigation is to enhance the functional properties of the polypropylene/kenaf fiber composites by incorporating hydrophobic titanium dioxide nanoparticles through an advanced injection moulding technique at an applied injection pressure of 80&#xa0;MPa. The influences of processing and actions of hydrophobic nanoparticles on the crystalline phase, surface morphology, moisture, and mechanical behaviour of composites were studied. The results demonstrated that an optimized injection pressure of 80&#xa0;MPa led to a better crystalline phase, with short band (52–54⁰ (2θ)), even reinforcement dispersion and improved content of hydrophobic nanoparticle influenced for better functional behavior. Furthermore, the PP hybrid composite containing 6 wt% of titanium dioxide nanoparticles exhibited reduced moisture absorption behaviour of 0.0131%, increased tensile, flexural, and impact strength, and higher hardness, which were 62, 47, 70, and 19% better than the polypropylene matrix without reinforcement, respectively. Due to the presence of titanium dioxide nanoparticles, the interfaces between the matrix and fibers were strengthened.</p> Graphical Abstract <p></p>

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Enrichment of poly-fiber composites functional properties by the influences of hydrophobic titanium dioxide nanoparticles via injection mould technique

  • 期刊论文

  • 发表日期：

    2025年12月5日

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  • T. Premkumar,
  • N. Nagabhooshanam,
  • Prahalad Singh Parihar,
  • Nilesh Bhosle,
  • S. Supriya,
  • V. S. N. Kumar,
  • Debabrata Barik,
  • R. Srinivasan,
  • S. Sathiyamurthy

摘要

With the advancement of polymer research, natural fibers are playing a prominent role in the development of biodegradable polymer composites, which are suited for automotive interior and exterior applications. It has certain drawbacks, including the hygroscopic nature of the natural fiber, poor fiber-matrix adhesion, and lower tensile strength. The objective of the investigation is to enhance the functional properties of the polypropylene/kenaf fiber composites by incorporating hydrophobic titanium dioxide nanoparticles through an advanced injection moulding technique at an applied injection pressure of 80 MPa. The influences of processing and actions of hydrophobic nanoparticles on the crystalline phase, surface morphology, moisture, and mechanical behaviour of composites were studied. The results demonstrated that an optimized injection pressure of 80 MPa led to a better crystalline phase, with short band (52–54⁰ (2θ)), even reinforcement dispersion and improved content of hydrophobic nanoparticle influenced for better functional behavior. Furthermore, the PP hybrid composite containing 6 wt% of titanium dioxide nanoparticles exhibited reduced moisture absorption behaviour of 0.0131%, increased tensile, flexural, and impact strength, and higher hardness, which were 62, 47, 70, and 19% better than the polypropylene matrix without reinforcement, respectively. Due to the presence of titanium dioxide nanoparticles, the interfaces between the matrix and fibers were strengthened.

Graphical Abstract