Stereoregular Syndiotactic Polypropylene Containing Chemically Bonded Nanogold Particles

• Main Authors: Jei-Ru Ye, 葉倢如
• Other Authors: Chien-Chao Tsiang
• Format: Others
• Language: zh-TW
• Published: 2009
• Online Access: http://ndltd.ncl.edu.tw/handle/23856210257084595854

碩士 === 國立中正大學 === 化學工程所 === 97 === In this study, we have synthesized a hydroxyl-terminated sPP-OH, and used this functionalized syndiospecific polypropylene to form a polymeric composite with chemically bonded nanogold particles. The syndiospecific polypropylene was prepared with (Ph2C(Cp)(Flu)ZrCl2) as the syndiospecific metallocene catalyst and triethylaluminum as the chain transfer agent. After the reaction, sPP-AlEt2 was form. It was then treated with oxygen and hydrogen peroxide to produce the hydroxy-terminated sPP (sPP-OH) as the end-functionalized prepolymer. Potassium was used to convert the end functional-group of sPP-OH from hydroxy into thiol along with ethylene sulfide. The resulting, sPP-SH was mixed with HAuCl4•3H2O in THF in the presence of a reducing agent, super hydride. Upon the reduction of Au+ to Au atoms, the thiol groups of sPP-OH molecules were bonded onto the gold surface and a polymeric nanocomposite material with chemically bonded nanogold particles was thus formed. The size of nanogold particles is approzimately 15~40nm. 1H-NMR、XPS、TGA、DSC、AFM、SEM and STEM have been used to investigate the physical properties of theresulting nanocomposites