中文摘要：

采用双-（β-三氟酮萘胺）镍（Ⅱ）为主催化剂，以三乙基铝（AlEt3）为助催化剂，在甲苯溶剂中进行了苯乙炔的聚合实验，并考察了聚合温度、Al／Ni摩尔比、单体浓度和聚合时间等因素对聚合反应的影响。结果表明，双-（β-三氟酮萘胺）镍（Ⅱ）／三乙基铝体系催化苯乙炔聚合显示了一定的催化活性，可催化苯乙炔聚合得到相对低的分子量和分子量分布（Mw／Mn=1．7—2．2）的聚苯乙炔。采用^1HNMR、FTIR、DSC、及WAXD技术对聚苯乙炔产物进行了研究。结果表明，本催化体系所得到的聚苯乙炔以顺式结构为主，顺式结构的含量达83．4％。DSC和WAXD分析表明为非晶态聚苯乙炔。

英文摘要：

Polymerization of phenylacetylene in toluene was catalyzed by a new late transition metal complex catalyst system based on bis - （ β - trifluoro ketoamino） nickel （ Ⅱ ）/Al （Et） 3. The influence of polymerization conditions such as polymerization temperature, Al/Ni molar ratio, monomer concentration, and polymerization time were investigated. The obtained polymer was characterized by gel permeation chromatography, proton nuclear magnetic resonance, Fourier- transform infrared spectroscopy, differential scanning calorimetry, and wide -angle X -ray diffraction. The results indicated that the catalyst system exhibited definite catalytic activity. The polymerization yielded polyphenylacetylene with moderate molecular weight and molecular weight distribution （ Mw/Mn = 1.7 - 2.2）. The polymers own cis - transoidal stereostructure （ cis = 83.4% ） by calculating according to l H NMR and are noncrystal via DSC and WAXD analysis.