@article{10272/23380,
year = {2024},
month = {1},
url = {https://hdl.handle.net/10272/23380},
abstract = {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.},
organization = {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 author
of 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 (Tecnologico
de Monterrey) supported the acquisition of materials. This research did not receive any other specific
grant from funding agencies in the public, commercial, or not-for-profit sectors.},
publisher = {MDPI},
title = {A Study of PLA Thin Film on SS 316L Coronary Stents Using a Dip Coating Technique},
doi = {10.3390/polym16020284},
author = {Macías Naranjo, Mariana and Sánchez Domínguez, Margarita and Rubio Valle, José Fernando and Rodríguez, Ciro A. and Martín Alfonso, José Enrique and García López, Erika and Vázquez Lepe, Elisa},
}