Deposition of calcium phosphate coatings by the chemical method on polylactic acid scaffolds

Authors

  • Jesús E. González Ruíz Universidad de La Habana, Departamento de Biomateriales Cerámicos y Metálicos, Centro de Biomateriales, La Habana, Cuba.
  • Elizabeth F. Santiesteban del Toro
  • Marcelino Rivas Santana Universidad de Matanzas, Centro de Fabricación Avanzada. Matanzas, Cuba.
  • Rosario Nancy Bada Rivero Universidad de La Habana, Departamento de Biomateriales Poliméricos, Centro de Biomateriales. La Habana, Cuba.
  • Lauren M. García Torres Centro de Inmunología Molecular, Departamento de Ingeniería. La Habana, Cuba.
  • Patricia del Carmen Zambrano Robledo Universidad Autónoma de Nuevo León, Facultad de Ingeniería Mecánica y Eléctrica. San Nicolás de los Garza, Nuevo León, México.
  • Ramón Universidad de Matanzas, Centro de Fabricación Avanzada. Matanzas, Cuba.

Keywords:

calcium phosphate coatings; polylactic acid scaffolds; chemical method, additive manufacturing.

Abstract

The use of polylactic acid scaffolds has been gaining ground in bone regeneration due to its ability to biodegrade. However, its use in clinical practice is limited, among other aspects, by its low bioactivity. The objective of this work is to evaluate two schemes for the deposition of calcium phosphate coatings on polylactic acid scaffolds made by the Fused Deposition Modeling method. The scaffold surfaces were activated by alkaline treatment in a 0.1M aqueous NaOH solution for 24 h at room temperature. In the deposition of the coatings, a solution supersaturated in calcium ions was used. The two deposition schemes were differentiated by the pH value presented by the solution after the precipitation stage. Nanostructured calcium phosphate deposits of the brushite (scheme 1) and apatite (scheme 2) type were obtained. Deposition scheme 2 generated a greater covered area on the surface of the scaffolds, higher calcium and phosphorus contents and a Ca/P ratio of 1.71 in their agglomerates.

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Published

2024-01-01

How to Cite

1.
González Ruíz JE, Santiesteban del Toro EF, Rivas Santana M, Bada Rivero RN, García Torres LM, Zambrano Robledo P del C, Ramón. Deposition of calcium phosphate coatings by the chemical method on polylactic acid scaffolds. Ing. Mec. [Internet]. 2024 Jan. 1 [cited 2025 Sep. 13];27(1):e688. Available from: https://ingenieriamecanica.cujae.edu.cu/index.php/revistaim/article/view/769

Issue

Vol. 27 No. 1 (2024): enero-abril

Section

Original article

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