- 作者: 洪金龍
- 作者服務機構: Institute of Materials Science and Engineering, National Sun Yat-Sen University, Kaohsiung 80424, Taiwan, R.O.C
- 中文摘要: A novel metallocene catalyst was prepared from the reaction of (h3-pentamethylcyclopentadienyl)dimethylaluminum (Cp*AlMe2) and titanium(IV) n-butoxide Ti(Obu)4. The resulting titanocene Cp*Ti(Obu)3 was combined with methylaluminoxane (MAO)/tri-iso-butylaluminum (TIBA) to carry out the syndiotactic polymerization of styrene. The resulting syndiotactic polystyrene (sPS) possesses high syndiotacticity according to 13C NMR. Catalytic activity and the molecular weight of the resulting sPSs were discussed in terms of reaction temperature, concentration of MAO, amounts of scavenger TIBA added, and the hydrogen pressure applied during polymerization.
- 英文摘要: --
- 中文關鍵字: Syndiotactic polystyrene; Cp*AlMe2/Ti(Obu)4.
- 英文關鍵字: Syndiotactic polystyrene; Cp*AlMe2/Ti(Obu)4.