Effect of geometry of laser surface texture and droplet volume on contact angle with Ti6Al4V substrate

Subject Areas :

Gholamreza Dabbagh ¹ (1Doctoral student, Department of Biomedical Engineering, Science and Research Branch, Islamic Azad University, Tehran)
seyed khatiboleslam Sadrnejad ² (Professor of Materials Science and Engineering, Department of Materials Science and Engineering, Sharif University of Technology, Tehran)
Reza Shoja Razavi ³ (Professor of Materials Science and Engineering, Faculty of Materials and Manufacturing Technologies, Malekashtar University of Technology, Tehran, 16788-15611,)
Amirabbas Nourbakhsh ⁴ (Associate Professor of Materials Science and Engineering, Department of Material Science, Shahreza Branch, Islamic Azad University, Isfahan, 81656-63997,)
Nahid Hassanzadeh Nemati ⁵ (biomaterial, science and research branch)

Received: 2022-11-19 Accepted : 2023-02-15 Published : 2023-11-22

Keywords: Surface contact angle, Laser surface texturing, Intersecting lines angle, Droplet volume, Sessile droplet method,

Abstract :

Implant surface modification by creating laser surface texturing is the best known method to increase adhesion. The best pattern of laser surface texturing is still unknown. In order to investigate other features of the new pattern proposed by the authors, in this research, first, the new surface patterns of intersecting lines with angles of 0, 15, 30, 45, 60, 75, and 90 degrees on the surface of Ti6Al4V alloy using pulse Nd: YAG laser was created. Then the contact angle of water droplets was measured by two methods: 1- recording and analyzing the image of the droplet and 2- using Extrand and Moon equations. Water droplets were selected in two volumes of 1 μlit and 25 μlit. Using metallurgical microscope, SEM, applying Wenzel and Cassie equations and drawing the corresponding diagrams, the effect of the angle between the lines, height, separation, and width of the surface texture columns on the contact angle of the droplet was investigated. The classical model of textures wettability was determined. The results showed for droplet with volume of 1 μlit the contact angle in both methods is almost constant and independent of the angle of the intersecting lines which is in good agreement with the results of previous researches. For droplet with volume of 25 μlit the contact angle in both methods is variable and dependent on the angle of the intersecting lines. The classical model of textures wettability in both droplet volumes is consistent with Wenzel's model.

References:

[1] Q. Zheng, L. Mao, Y. Shi, W. Fu & Y. Hu, "Biocompatibility of Ti6Al4V Titanium Alloy Implants with Laser Microgrooved Surfaces", Materials Thechnology, vol. 55, pp. 1-10, 2020.
[2] Y. Yan, E. Chibowski & A. Szczes, "Surface Properties of Ti6Al4V Alloy part I: Surface Roughness and Apparent Surface Free Energy", Materials Science and Engineering C, vol. 70, pp. 207-215, 2017.

[3] K. Y. Law & H. Zhao, "Surface Wetting: Characterization, Contact Angle, and Fundamentals", Springer, 2016.


[4] A. Marmur & E. Bittoun, "When Wenzel and Cassie are right: reconciling local and global considerations", Langmuir, vol. 25, pp. 1277-1281, 2009.

[5] A. Marmur, "Soft contact: measurement and interpretation of contact angles", Soft Matter, vol. 2, pp. 12-17, 2006.

[6] A. Amirfazli, D. Y. Kwok, J. Gaydos & A. W. Neumann, "Line tension measurements through drop size dependence of contact angle", Colloid Interface Science, vol. 205, pp. 1-11, 1998.

[7] A. Marmur, "Line tension and the intrinsic contact angle in solid–liquid–fluid systems". Colloid Interface Science, vol. 186, pp. 462-466, 1997.

[8] S. Kranias, "Effect of drop volume on static contact angles", Technical note 310e: Kruss GmbH, France, 2004.

[9] C. W. Extrand & S. I. Moon, "When sessile drop Are No longer small: transitions from spherical to fully flattened", Langmuir, vol. 25, pp. 11815-11822, 2010.

[10] C. E. Cansoy, "The effect of drop size on contract angle measurements of superhydrophobic surfaces", RSC Adv, vol. 4, pp. 1197-1203, 2014.

[11] T. Zhao & L. Jiang, "Contact angle measurement of natural materials", Colloids and Surfaces B: Biointerfaces, vol. 161, pp. 324-330, 2018.

[12] J. W. Drelich, "Contact angles: From past mistakes to new developments through liquid-solid adhesion measurements", Advances in Colloid and Interface Science, vol. 267, pp. 1-14, 2019.

[13] H. Gokberk Ozcelik, E. Satiroglu, & M. Barisik, "Size Dependent Influence of Contact Line Pinning on Wetting of Nano-textured/patterned Silica Surfaces", Nanoscale, vol. 41, pp. 1-30, 2020.

[14] Gh. R. Dabbagh, S. K. Sadrnezhaad, R. Shoja Razavi, A. M. Nourbakhsh & N. Hassanzadeh Nemati, "Laser textured novel patterns on Ti6Al4V alloy for dental implants surface improvement", Laser Applications, vol. 33, pp. 1-17, 2021.

[15] K. T. Voisey, C. A. Scotchford, L. Martin & H. S. Gill, "Effect of Q-Switched Laser surface Texturing of Titanium on Osteoblast Cell Response", Physics Procedia, vol. 56, pp. 1126-1135, 2014.

[16] A. Y. Fasasi, S. Mwenifumbo, N. Rahbar, J. Chen, M. Li, A. C. Beye, C. B. Arnold & W. O. Soboyejo, "Nano – Second UV Laser Processed Micro – Grooves on Ti6Al4V for Biomedical Applications", Materials Science and Engineering C, vol. 29, pp. 5-13, 2009.

[17] Ch. Wang, H. Hu, Zh. Li, Y. Shen, Y. Xu, G. Zhang, X. Zeng, J. Deng, Sh. Zhao, T. Ren & Y. Zhang, "Enhanced Osseointegration of Titanium Alloy Implants with Laser Microgrooved Surface and Graphene Oxide Coating", Applied Materials & Interfaces, vol. 11, pp. 39470-39483, 2019.

[18] D. Li & A. W. Neumann, "Equation of State for Interfacial Tensions of Solid-Liquid Systems", Advances in Colloid and Interface Science, vol. 39, pp. 299-345, 1992.

[19] R. N. Wenzel, “Resistance of Solid Surfaces to Wetting by Water”, Industrial and Engineering Chemistry, vol. 28, pp.988-994,1936.

[20] - A.B.D. Cassie, S.Baxter, “ Wettability of porous surfaces”, Transaction of the faraday society, vol. 40, pp. 546-551, 1944.

[21] W. Li & A. Amirfazli, "A thermodynamic approach for determining the contact angle hysteresis for superhydrophobic surfaces", Colloid Interface Science, vol. 292, pp. 195-201, 2005.

[22] W. Li & A. Amirfazli, "Superhydrophobic Surfaces: Adhesive Strongly to Water", Advanced Materials, vol. 19, pp. 3421-3422, 2007.

[23] W. Li & A. Amirfazli, "Microtextured superhydrophobic surfaces: A thermodynamic analysis", Advances in Colloid and Interface Science, vol. 132, pp. 51-68, 2007.