Synthesis and characterization of hyperbranched polyurethane hybrids using tetraethoxysilane (TEOS) as cross-linker

Kishore K. Jena, K. V.S.N. Raju

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    51 Scopus citations

    Abstract

    Organic-inorganic hybrid coatings were derived from a hydroxyl-terminated hyperbranched polyester, 3-isocyanatopropyl triethoxysilane (ISPTES), and then cross-linked widi various percentages of SiO2. This system was able to cross-link by hydrolysis of a tetraethoxysilane group in room temperature and humid conditions and dien at 120 °C for 12-14 h, forming a three-dimensional hybrid structure, where me organic and inorganic phases were bonded covalently. The main focus of this work was to study the change of properties of the coating with SiO2 modification. These hybrid coatings were also characterized by using NMR spectroscopy, Fourier transform infrared (MlK) spectroscopy, dynamical mechanical thermal analyzer (DMTA), thermal analysis (TGA), and tensile strength.

    Original languageBritish English
    Pages (from-to)9214-9224
    Number of pages11
    JournalIndustrial and Engineering Chemistry Research
    Volume47
    Issue number23
    DOIs
    StatePublished - 3 Dec 2008

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