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Polyhydroxyurethane-silica nanocomposites were synthesized with 2-ethyl-2-(((3-((2-(2-oxo-1,3-dioxolan-4-ly)ethyl)thio)propanoyl)oxy)methyl)propane-1,3-diylbis(3-((2-(2-oxo-1,3-dioxolan-4-yl)ethyl)thio)propanate), Tris-CC, and 1,3-diaminopropane in the presence of 5–30 wt% of perhydropolysilazane, PHPS, which is a precursor of silica, in one step. During the synthesis of nanocomposite, three reactions,...
Polybenzoxazine/silica nanocomposites were synthesized with perhydropolysilazane (PHPS) and benzoxazines via thermal polymerization in one step. The reaction of benzoxazine's hydroxy group and PHPS was investigated via 1H nuclear magnetic resonance and Fourier transform infrared spectrometry. At low heating temperatures, benzoxazine was converted to a polymer with a N,O-acetal structure, whereas at...
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