Superhydrophobic coatings with self-cleaning and antibacterial adhesion properties for denture base

J Mech Behav Biomed Mater. 2019 Oct:98:148-156. doi: 10.1016/j.jmbbm.2019.06.006. Epub 2019 Jun 6.

Abstract

In this paper, coatings with antibacterial adhesion, excellent biocompatibility, good superhydrophobicity and highly transmittance were fabricated by mixing hydroxyl group fluropolymer (PHF), polyurethane oligomer (Pre-PU) with epoxy functionalized SiO2 nanoparticles and thermal-crosslinked. The properties of coatings were investigated by Fourier transform infrared spectroscopy (FT-IR), Scanning electron microscopy (SEM), Atomic force microscopy (AFM), Ultraviolet near-infrared visible spectrophotometer (UV-3600). The morphology results indicated that the roughness scale of micro-nano structure surface can be monitored by changing the contents of functionalized polymers and SiO2. The coating S2 showed outstanding superhydrophobicity with the contact angle of 155.9°, the sliding angle less than 1°, and good transparency. Furthermore, the coating exhibited antibacterial adhesion and favorable biosafety, confirming a potential for application in the oral field.

Keywords: Antibacterial adhesion; Biosafety; Self-cleaning; Superhydrophobicity.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Bacterial Adhesion / drug effects*
  • Coated Materials, Biocompatible / chemistry*
  • Coated Materials, Biocompatible / pharmacology*
  • Denture Bases / microbiology*
  • Polymers / chemistry
  • Silicon Dioxide / chemistry
  • Staphylococcus aureus / drug effects
  • Staphylococcus aureus / physiology
  • Wettability

Substances

  • Coated Materials, Biocompatible
  • Polymers
  • Silicon Dioxide