引用本文:
阎卫东, 刘立新, 姜涛, 李丹, 周鼐, 胡友良. β-二酮钛配合物/MAO催化合成间规聚苯乙烯及其热性能[J]. 应用化学,
2001, 18(2): 116-119.
Citation: YAN Wei-Dong, LIU Li-Xin, JIANG Tao, LI Dan, ZHOU Nai, HU You-Liang. Syndiotactic Polystyrene Catalytically Prepared over β-Diketonate Titanium Complex/MAO and Its Thermal Properties[J]. Chinese Journal of Applied Chemistry, 2001, 18(2): 116-119.
Citation: YAN Wei-Dong, LIU Li-Xin, JIANG Tao, LI Dan, ZHOU Nai, HU You-Liang. Syndiotactic Polystyrene Catalytically Prepared over β-Diketonate Titanium Complex/MAO and Its Thermal Properties[J]. Chinese Journal of Applied Chemistry, 2001, 18(2): 116-119.
β-二酮钛配合物/MAO催化合成间规聚苯乙烯及其热性能
English
Syndiotactic Polystyrene Catalytically Prepared over β-Diketonate Titanium Complex/MAO and Its Thermal Properties
Abstract:
The syndiospecific polymerization of styrene was carried out via U-diketonate titanium complex/MAO. The polymerization activity approached to 6.2×105 g/(mol·h) in reaction conditions:catalyst 4.3×10-4 mol/L, molar ratio of aluminum to titanium 500:1, 80℃ and 1 h. The melting temperature of the syndiotactic polystyrene was about 267℃. The effects of molar ratio of aluminum to titanium, concentration of U-diketonate titanium complex and temperature on polymerization were investigated. The polymer was characterized by 13C NMR and DSC. The thermal properties of the syndiotactic polystyrene were discussed.
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