A Study of PLA Thin Film on SS 316L Coronary Stents Using a Dip Coating Technique
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...
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| Format: | Article |
| Language: | English |
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MDPI AG
2024-01-01
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| Series: | Polymers |
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| Online Access: | https://www.mdpi.com/2073-4360/16/2/284 |
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| author | Mariana Macías-Naranjo Margarita Sánchez-Domínguez J. F. Rubio-Valle Ciro A. Rodríguez J. E. Martín-Alfonso Erika García-López Elisa Vazquez-Lepe |
| author_facet | Mariana Macías-Naranjo Margarita Sánchez-Domínguez J. F. Rubio-Valle Ciro A. Rodríguez J. E. Martín-Alfonso Erika García-López Elisa Vazquez-Lepe |
| author_sort | Mariana Macías-Naranjo |
| collection | DOAJ |
| description | 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<sup>−1</sup> 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. |
| first_indexed | 2024-03-08T10:36:07Z |
| format | Article |
| id | doaj.art-1c96eabb525c4a21a27ad92718b22d08 |
| institution | Directory Open Access Journal |
| issn | 2073-4360 |
| language | English |
| last_indexed | 2024-03-08T10:36:07Z |
| publishDate | 2024-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Polymers |
| spelling | doaj.art-1c96eabb525c4a21a27ad92718b22d082024-01-26T18:14:19ZengMDPI AGPolymers2073-43602024-01-0116228410.3390/polym16020284A Study of PLA Thin Film on SS 316L Coronary Stents Using a Dip Coating TechniqueMariana Macías-Naranjo0Margarita Sánchez-Domínguez1J. F. Rubio-Valle2Ciro A. Rodríguez3J. E. Martín-Alfonso4Erika García-López5Elisa Vazquez-Lepe6Tecnologico de Monterrey, School of Engineering and Sciences, Ave. Eugenio Garza Sada 2501, Monterrey 64849, Nuevo León, MexicoCentro de Investigación en Materiales Avanzados, S.C. (CIMAV), Unidad Monterrey, Alianza Norte 202, Apodaca 66628, Nuevo León, MexicoPro2TecS—Chemical Product and Process Technology Research Center, Department of Chemical Engineering and Materials Science, ETSI, Universidad de Huelva, Campus de “El Carmen”, 21071 Huelva, SpainTecnologico de Monterrey, School of Engineering and Sciences, Ave. Eugenio Garza Sada 2501, Monterrey 64849, Nuevo León, MexicoPro2TecS—Chemical Product and Process Technology Research Center, Department of Chemical Engineering and Materials Science, ETSI, Universidad de Huelva, Campus de “El Carmen”, 21071 Huelva, SpainTecnologico de Monterrey, School of Engineering and Sciences, Ave. Eugenio Garza Sada 2501, Monterrey 64849, Nuevo León, MexicoTecnologico de Monterrey, School of Engineering and Sciences, Ave. Eugenio Garza Sada 2501, Monterrey 64849, Nuevo León, MexicoThe 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<sup>−1</sup> 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.https://www.mdpi.com/2073-4360/16/2/284coronary artery stentdip coatingpolylactic acidthin filmpolymeric coating |
| spellingShingle | Mariana Macías-Naranjo Margarita Sánchez-Domínguez J. F. Rubio-Valle Ciro A. Rodríguez J. E. Martín-Alfonso Erika García-López Elisa Vazquez-Lepe A Study of PLA Thin Film on SS 316L Coronary Stents Using a Dip Coating Technique Polymers coronary artery stent dip coating polylactic acid thin film polymeric coating |
| title | A Study of PLA Thin Film on SS 316L Coronary Stents Using a Dip Coating Technique |
| title_full | A Study of PLA Thin Film on SS 316L Coronary Stents Using a Dip Coating Technique |
| title_fullStr | A Study of PLA Thin Film on SS 316L Coronary Stents Using a Dip Coating Technique |
| title_full_unstemmed | A Study of PLA Thin Film on SS 316L Coronary Stents Using a Dip Coating Technique |
| title_short | A Study of PLA Thin Film on SS 316L Coronary Stents Using a Dip Coating Technique |
| title_sort | study of pla thin film on ss 316l coronary stents using a dip coating technique |
| topic | coronary artery stent dip coating polylactic acid thin film polymeric coating |
| url | https://www.mdpi.com/2073-4360/16/2/284 |
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