Hexagonal boron nitride (h-BN) nanoparticle is one of the most promising inorganic nanomaterials in recent years, due to exhibiting a wide variety of unique properties such as high mechanical stiffness, excellent thermal conductivity, high corrosion resistance, and chemical inertness. On the other hand, fluoroalkyl end-capped vinyltrimethoxysilane oligomer [RF-(CH2CHSi(OMe)3)n-RF: RF-(VM)n-RF] can undergo the sol-gel reaction under alkaline conditions to provide the corresponding fluorinated oligomeric silica nanocomposites possessing an oleophobic/superhydrophobic characteristic. Thus, it is of particular interest to develop novel fluorinated oligomer/h-BN nanocomposites possessing not only the surface active property imparted by fluorine but also the unique characteristic related to h-BN. Here we report that fluoroalkyl end-capped vinyltrimethoxysilane oligomer /hexagonal boron nitride (h-BN) nanocomposites [RF-(VM-SiO2)n-RF/h-BN] can be prepared by the reactions of the corresponding oligomer with h-BN nanoparticles (mean diameter: 50 nm) under alkaline or acidic conditions at room temperature, respectively. These fluorinated h-BN nanocomposites thus obtained were applied to the surface modification of PMMA [poly(methyl methacrylate)]. Interestingly, each modified PMMA film surface treated with these nanocomposites, which were prepared under acidic conditions, can give a good oleophobic characteristic imparted by fluoroalkyl segments in the nanocomposites on the surface side and reverse side. On the other hand, the nanocomposites, which were prepared under alkaline conditions, can give an oleophobic property on the only surface side. These findings will be demonstrated in detail in this conference.

Preparation and application of fluoroalkyl end-capped vinyltrimethoxvsilane oligomer/hexagonal boron nitride nanocomposites

2019 Fall National Meeting

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