| Summary: | 碩士 === 淡江大學 === 化學工程與材料工程學系碩士班 === 94 === This work focuses on the synthesis method of polymer-nanogold nanocomposites which protected and stabilized by an acrylic copolymer. The radical chain polymerization was used to synthesize poly(MMA-co-AA) and poly(MMA-co-SA) copolymers, and reduced HAuCl4 in the polymer solution by Super-Hydride in this study. This study also confirms that sodium acrylate group on the copolymer chain can reduced/stabilized gold to synthesize nanogolds.
Furthermore, FTIR and NMR were employed to investigated the evolution of chemical bonds between composite molecules during the copolymer polymerization. TEM and size-measurement were used to find out the size and distribution of Au nanoparticles. TGA and DSC were used to measure the degradation temperature and glass transition temperatures of the prepared copolymers and nanocomposites.
The λmax of the prepared nanocomposites were at 520~570 nm observed by UV-Vis, hence confirms the successfully synthesis of the nanogold and nanocomposites. As the gold particles grow up or aggregation, a red shift of the absorption was observed. In addition, the degradation temperatureof the prepare nanocomposites were decrease with the content of nanogold.
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