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<p>In the past three decades, numerous studies have been reported on polylactic acid (PLA) composite-based partially absorbable implants. However, little has been reported on developing PLA composites for online health monitoring of comminuted fractures. This study highlights the development of a novel PLA composite matrix with sensing capabilities required for partially absorbable cerclage strips for online health monitoring of comminuted fractures. The PLA composites were prepared in filament form (by reinforcement of hydroxyapatite (HAp), chitosan (CS), and BaTiO<sub>3</sub> nanopowder in different wt.% based on melt flow index (MFI) as per ASTM D 1238) for 3D printing of smart cerclage strips. Based on morphological, mechanical, thermal, and dielectric properties, the study shows that 98%(PLA-HAp-CS)-2%(BaTiO<sub>3</sub>) is a suitable composition/proportion for filament fabrication. For the selected composition of PLA composite matrix, Young’s modulus (E) 3759.01 ± 10.2&#xa0;MPa, peak stress 45.86 ± 1.89&#xa0;MPa, and predicted dielectric constant (<i>ε</i><sub><i>r</i></sub>) 2.81 (using Debye relaxation model) were observed. Further, the results are supported by Fourier transform infrared, differential scanning calorimetry, thermal gravimetric analysis, X-ray diffraction, scanning electron microscope, and energy-dispersive spectroscopy.</p>

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On the Development of a Novel PLA Composite Matrix with Sensing Capabilities for Partially Absorbable Cerclage Strips

  • 期刊论文

  • 发表日期：

    2025年2月7日

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  • Gurwinder Singh,
  • Rupinder Singh,
  • Amrinderpal Singh

摘要

In the past three decades, numerous studies have been reported on polylactic acid (PLA) composite-based partially absorbable implants. However, little has been reported on developing PLA composites for online health monitoring of comminuted fractures. This study highlights the development of a novel PLA composite matrix with sensing capabilities required for partially absorbable cerclage strips for online health monitoring of comminuted fractures. The PLA composites were prepared in filament form (by reinforcement of hydroxyapatite (HAp), chitosan (CS), and BaTiO3 nanopowder in different wt.% based on melt flow index (MFI) as per ASTM D 1238) for 3D printing of smart cerclage strips. Based on morphological, mechanical, thermal, and dielectric properties, the study shows that 98%(PLA-HAp-CS)-2%(BaTiO3) is a suitable composition/proportion for filament fabrication. For the selected composition of PLA composite matrix, Young’s modulus (E) 3759.01 ± 10.2 MPa, peak stress 45.86 ± 1.89 MPa, and predicted dielectric constant (εr) 2.81 (using Debye relaxation model) were observed. Further, the results are supported by Fourier transform infrared, differential scanning calorimetry, thermal gravimetric analysis, X-ray diffraction, scanning electron microscope, and energy-dispersive spectroscopy.