| 초록 |
A series of waterborne polyurethane (WPU) were synthesized from polypropylene glycol (PPG) and 4,4'-methylenebis(cyclohexyl isocyanate)(H12MDI), dimethylbutanic acid(DMBA), 2-hydroxyethyl acrylate(HEA) with the addition hydroxyapatite(HAp) which was chemically modified with vinyltrimethoxysilane(VTMS). HAp is widely used as bioceramic materials and lighter than metal. The structure, thermal and mechanical properties of the resulting PU films have been charaterized by the Fourier transform infrared spectroscopy (FT-IR), thermogravimetry analysis (TGA), differential scanning calorimeter (DSC) and universal testing machine (UTM). |
