Synthesis of hydrophobic fluorinated coating by further addition of isocyanate and amine groups to urethane bond

Authors

  • Pedro Edmundo Martín-Várguez Universidad Autónoma de Nuevo León
  • Virgilio Ángel González-González Universidad Autónoma de Nuevo León
  • Marco Antonio Garza-Navarro Universidad Autónoma de Nuevo León https://orcid.org/0000-0002-1795-6071
  • Alejandro Torres-Castro Universidad Autónoma de Nuevo León https://orcid.org/0000-0002-3034-2568

DOI:

https://doi.org/10.29105/ingenierias24.90-11

Keywords:

Synthesis, fluorinated, spin-coating, urethane

Abstract

Six fluorinated precursors were synthesized from commercial polymer Fluorolink E10-H, 3-isocyanatepropyl ethoxysilane and 3-aminepropyl methoxysilane. The precursors were spin-coated on glass substrates and annealed at 150 °C for 2 h to obtain hydrophobic coatings. Chemical structure of was determined by infrared spectroscopy. Hydrophobicity was measured from drop contact angle, ranging between 70 and 93º. Hydrophobicity increased with the number of silane groups until a certain limit before losing it. Precursor P111 has the better properties (thermal stability 283.5 °C, contact angle 93°) within our work.

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Author Biographies

Pedro Edmundo Martín-Várguez, Universidad Autónoma de Nuevo León

BS in Industrial Chemestry, Universidad Autónoma de Yucatán, Science Master in Materials Sciences, FIME-UANL. Doctoral student in Materials Engineering FIME.

Virgilio Ángel González-González, Universidad Autónoma de Nuevo León

Degree in Organic Chemistry from the Faculty of Chemical Sciences of the UANL and a Doctorate in Materials Engineering awarded by the FIME-UANL. He has been a scientific researcher in the field of polymers since 1975. He is a member of SNI level II. He has been a full-time professor at FIME since 1998.

Marco Antonio Garza-Navarro, Universidad Autónoma de Nuevo León

Mechanical Electrical Engineer (2004), M.C. in Mechanical Engineering with a Specialty in Materials (2006) and a Doctorate in Materials Engineering (2009) from the FIME-UANL. Research Award UANL-2009, Level I at the SNI. He is currently a Research Professor at FIME-UANL.

Alejandro Torres-Castro, Universidad Autónoma de Nuevo León

Mechanical Engineer, Master of Science and Doctorate in Materials Engineering from FIME-UANL. Post-doctorate at the University of Texas at Austin, USA. He is currently a research professor at FIME. Level II in the SNI.

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Published

2021-01-30

How to Cite

Martín-Várguez, P. E., González-González, V. Ángel, Garza-Navarro, M. A., & Torres-Castro, A. (2021). Synthesis of hydrophobic fluorinated coating by further addition of isocyanate and amine groups to urethane bond. Revista Ingenierías, 24(90), 13–26. https://doi.org/10.29105/ingenierias24.90-11

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Vol. 24 No. 90 (2021): Enero-Junio 2021

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