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Study on the Synthesis and Properties of Polymers-Poss Hybrid Materials

Author: HuLiMei
Tutor: LiQiFang
School: Beijing University of Chemical Technology
Course: Materials Science
Keywords: Polyhedral Oligomeric Silsesquioxane(POSS) Acrylate emulsion Thermoplastic polyurethane elastomers Thermal properties Mechanical properties
CLC: TB39
Type: Master's thesis
Year: 2006
Downloads: 357
Quote: 0
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Abstract


In this thesis, Octaphenylsilsesquioxane(POSS1), Octa(nitrophenyl)-silsesquioxane (POSS2) were synthesized by hydrolytic condensation of phenyltrichlorosilane using the method of molecule design. The optimal condition of reaction was conformed by analysis of relation between condition and productions. The thermal property was characterized by DSC. The crystal structures of POSS were determined by Wide-Angle X-ray Diffraction (WAXD). The indexing results showed that the crystal belong to the tetragonal structure.Octa(nitrophenyl)silsesquioxane - modified acrylate emulsion was synthesized by a semi -continuous polymerization. The particle size distribution showed that the Octa(nitrophenyl)silsesquioxane particles homogeneously disperse in the emulsion at a nanometer scale. Differential scanning calorimetry showed that the addition of POSS2 increased Tg of

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