Synhesis and characterization of PU-Si nanohybrid: Influence of silica on properties of UV-curable polyurethane acrylate

Eui Sung Jang, Sher Bahadar Khan, Joonsuk Choi, Jongchul Seo, Haksoo Han

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UV-curable polyurethane acrylate-silica nanohybrid has been prepared by incorporating 1% of silica precursors into polyurethane acrylate (PU) polymer matrix using a sol-gel technique and were characterized by X-ray diffraction (XRD), fourier transform infrared spectroscopy (FTIR) and scanning electron microscopy (SEM). The thermal properties were studied by thermogravimetric analysis (TGA) and differential scanning calorimetry (DSC). TGA test revealed that the thermal decomposition temperature (Td50%) of the nanohybrid increased significantly, being 19 °C higher than that of pure PU while DSC measurements indicated that the introduction of 1 mass% of TEOS increased the glass transition temperature from 94 to 103 °C. Further the water sorption capacity of the PU was significantly decreased by the incorporation of TEOS.

Original languageEnglish
Pages (from-to)549-554
Number of pages6
JournalJournal of the Chemical Society of Pakistan
Issue number4
Publication statusPublished - 2011 Aug 1


All Science Journal Classification (ASJC) codes

  • Chemistry(all)

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