查看文章

A new functional N-phenylaminomethyl POSS was synthesized by traditionally controlled hydrolytic condensation in one step reaction. The POSS structure was ascribed to a T₁₀ and T₁₂ derivative mixture as main component by varied characterization methods such as ¹H NMR, ¹³C NMR, ²⁹Si NMR, gel permeation chromatography (GPC) and matrix assisted laser desorption ionization time of flight mass spectrometry (MALDI−TOF MS). Then based on this new POSS reacted with polyether diisocyanate, a series of POSS−PU composites with different POSS concentration was prepared and characterized. The POSS−PU composites showed no macrophase separation up to 52 wt % POSS concentration. The high resolution transmission electron microscopy (HRTEM) images of POSS−PU composites showed a well separated nanostructure of POSS with a typical phase size of 5−10 nm. A critical POSS concentration …