Transparent physical hybrids

Daimatsu, K. Anno, Y. Sugimoto, H. Nakanishi, E. Inomata, K., Preparation, Morphology, and Physical Properties of Transparent PSt Hybrid Materials Containing Silicone Macromonomer. J.Appl. Polym. Sci. 2008,108, 362-369. 

Noell et al. reported the preparation of silica-poly(ether ether ketone) hybrid materials with improved physical properties.155 An amine-end-capped poly(ether ether ketone) was used to react with isocyanatopropyltriethoxysilane in tetrahydrofuran (THF). The triethylsilane-end-capped poly (ether ether ketone) was mixed with tetraethoxysilane (TEOS) in THF. Quantitative amounts of water were introduced into die system, and the mixture was reduxed at 80°C. The entire reaction mixture was allowed to further react in Tedon molds. Tough transparent materials were obtained by diis approach. 

We therefore conclude that, for a combination of model, numerical and conceptual reasons the OHAO basis is well-adapted to a theory of valence. The hybrid orbital basis (for simple molecules) has a distinctive symmetry property it carries a permutation representation of the molecular symmetry group the equivalent orbitals are always sent into each other, never into linear combinations of each other. This simple fact enables the hybrid orbital basis to be studied in a way which is physically more transparent than the conventional AO basis. 

Sinha, S., S. Barjami, G. lannacchione, A. Schwab, and G. Muench. 2005. Off-axis thermal properties of carbon nanotube films. Journal of Nanoparticle Research 1(6) 651-657. Smitha, S., P. Mukundan, P. Krishna Pillai, and K.G.K. Warrier. 2007. Silica-gelatin bio-hybrid and transparent nano-coatings through sol-gel technique. Materials Chemistry and Physics 103 (2-3) 318-322. 

Yu, Y.Y. and Chen, W.C. (2003) Transparent organic-inorganic hybrid thin films prepared from acrylic polymer and aqueous monodispersed colloidal silica. Materials Chemistry and Physics, 82, 388-395. 

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