An effective method to enhance scratch resistance was developed using a 3-glycidyloxyproplytrimethoxysilane as a base on the formation of a transparent coating on glass substrate. The addition of silver nanoparticles improves further the scratch hardness of the thin film coating. The critical load obtained from the microscratch test increases from 2931 to 3319 mN upon the addition of silver nanoparticles. The size of silver nanoparticle was analysed using transmission electron microscope (TEM) and was found to be in the range of 20-40 nm. Addition of silver nanoparticles also increases the surface energy; hence the result enhances the hydrophobicity compared to substrate with only GLYMO coated on it.
In this work, silver nanoparticles were synthesized using the precipitation method at room temperature. The size of the silver nanoparticle was analyzed using transmission electron microscope and found to be in the range of 20 to 40 nm. The multi-functional transparent film on glass substrate was prepared using silver nanoparticle solutions and 3-Glycidyloxypropyltrimethoxy silane (GLYMO) by dip coating method. Ultraviolet visible spectroscopy measurement shows low absorbance thus confirming high transparency level. The critical load obtained from the micro-scratch test showed an increase from 3000 mN to 3319 mN.
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