Abstract
Objective
Use of transparent organosilane hybrid films to protect substrates such as glasses and plastics is of great importance for electronic applications. In this study, graphene oxides (GOs) were chemically conjugated with organosilane oligomers to improve the dispersibility and hardness of organosilane coatings.
Methods
The GO-conjugation with organosilane oligomers (GO-oSi) was prepared through a two-step route featuring amine-carboxyl coupling reaction and oligomerization with silica precursors. The structural properties of GO-oSi were characterized using Fourier transform infrared spectroscopy, Raman spectroscopy, and X-ray photoelectron spectroscopy.
Results
The stability of the GO-organosilane coating dispersion was confirmed after storage in ethanol for 10 days via Tyndall effect analysis. After photopolymerization with organosilane coating agent, the transparencies of the GO-organosilane films were 94% or more, the enhanced hardness was characterized from 3H to 5H through pencil hardness testing.
Conclusion
The simple strategy of pre-conjugation of GOs with organosilane oligomers has the potential to enhance dispersion and hardness of a wide variety of coating materials.
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Seon, DM., Park, Y., Yu, GT. et al. Preparation of Organosilane Coatings via Chemically Pre-conjugated Graphene Oxides for Enhanced Dispersion and Hardness. Toxicol. Environ. Health Sci. 10, 72–78 (2018). https://doi.org/10.1007/s13530-018-0349-1
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DOI: https://doi.org/10.1007/s13530-018-0349-1