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<p>This study is inclined towards exploring the microstructure and crystallinity of medical grade polyamide 12 (PA12) and the way it is being influenced by Selective Laser Sintering (SLS) parameters, with a major focus on application towards biomedical. The key goal of this study is to get the best input setting, to enhance both the mechanical as well as the biocompatibility of PA12 with the help of morphological outputs. For getting the desired output, samples were fabricated through varying Laser wattage, Laser travel speed, and Deposition thickness in the SLS input settings. XRD, EDS, and FESEM analyses were carried out on the sintered samples to determine crystallinity, elemental composition, and surface morphology,&#xa0;respectively. The fabricated samples fetch the best result of surface roughness (2.5–3.8&#xa0;µm) and XRD, supporting the biocompatibility, at a Laser wattage of 30 W, a Laser travel speed of 750&#xa0;mm/s, and 100&#xa0;µm layer thickness. The findings indicate that careful Laser wattage and Laser travel speed adjustment significantly affect surface quality, crystallinity, and strength. While a moderate heat input improves overall performance and excessive heat can compromise the surface and lower crystallinity.</p>

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Effect of Selective Laser Sintering Parameters on the Microstructural and Crystallographic Properties of Polyamide

  • 期刊论文

  • 发表日期：

    2025年10月21日

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  • Shubham Anand,
  • Amit Kumar

摘要

This study is inclined towards exploring the microstructure and crystallinity of medical grade polyamide 12 (PA12) and the way it is being influenced by Selective Laser Sintering (SLS) parameters, with a major focus on application towards biomedical. The key goal of this study is to get the best input setting, to enhance both the mechanical as well as the biocompatibility of PA12 with the help of morphological outputs. For getting the desired output, samples were fabricated through varying Laser wattage, Laser travel speed, and Deposition thickness in the SLS input settings. XRD, EDS, and FESEM analyses were carried out on the sintered samples to determine crystallinity, elemental composition, and surface morphology, respectively. The fabricated samples fetch the best result of surface roughness (2.5–3.8 µm) and XRD, supporting the biocompatibility, at a Laser wattage of 30 W, a Laser travel speed of 750 mm/s, and 100 µm layer thickness. The findings indicate that careful Laser wattage and Laser travel speed adjustment significantly affect surface quality, crystallinity, and strength. While a moderate heat input improves overall performance and excessive heat can compromise the surface and lower crystallinity.