RT Journal Article
T1 A Study of PLA Thin Film on SS 316L Coronary Stents Using a Dip Coating Technique
A1 Macías Naranjo, Mariana
A1 Sánchez Domínguez, Margarita
A1 Rubio Valle, José Fernando
A1 Rodríguez, Ciro A.
A1 Martín Alfonso, José Enrique
A1 García López, Erika
A1 Vázquez Lepe, Elisa
AB The dip coating process is one of the recognized techniques used to generate polymeric coatings on stents in an easy and low-cost way. However, there is a lack of information about the influence of the process parameters of this technique on complex geometries such as stents. This paper studies the dip coating process parameters used to provide a uniform coating of PLA with a 4–10 µm thickness. A stainless-steel tube (AISI 316L) was laser-cut, electropolished, and dip-coated in a polylactic acid (PLA) solution whilst changing the process parameters. The samples were characterized to examine the coating’s uniformity, thickness, surface roughness, weight, and chemical composition. FTIR and Raman investigations indicated the presence of PLA on the stent’s surface, the chemical stability of PLA during the coating process, and the absence of residual chloroform in the coatings. Additionally, the water contact angle was measured to determine the hydrophilicity of the coating. Our results indicate that, when using entry and withdrawal speeds of 500 mm min−1 and a 15 s immersion time, a uniform coating thickness was achieved throughout the tube and in the stent with an average thickness of 7.8 µm.
PB MDPI
SN 2073-4360 (electrónico)
YR 2024
FD 2024-01
LK https://hdl.handle.net/10272/23380
UL https://hdl.handle.net/10272/23380
LA eng
NO Macías-Naranjo, M., Sánchez-Domínguez, M., Rubio-Valle, J. F., Rodríguez, C. A., Martín-Alfonso, J. E., García-López, E., & Vazquez-Lepe, E. (2024). A Study of PLA Thin Film on SS 316L Coronary Stents Using a Dip Coating Technique. In Polymers (Vol. 16, Issue 2, p. 284). MDPI AG. https://doi.org/10.3390/polym16020284
NO We gratefully thank Consejo Nacional de Humanidades, Ciencia y Tecnología (Conahcyt)(CVU: 931068) and Tecnologico de Monterrey for providing scholarship and tuition to the lead authorof the Ph.D. degree program. We thank Ciencia de Frontera Consejo Nacional de Humanidades,Ciencias y Tecnologías: CF-2023-I-2901. The Advanced Manufacturing research group (Tecnologicode Monterrey) supported the acquisition of materials. This research did not receive any other specificgrant from funding agencies in the public, commercial, or not-for-profit sectors.
DS Repositorio Institucional de la Universidad de Huelva
RD 1 jun 2026