【摘要】 <正> 利用Ziegler型催化剂进行炔烃聚合的研究在近年来受到了注意。最近,Watson等以丁基锂与四氯化钛组合的催化剂进行乙炔、丙炔、丁炔-1的聚合,得到不溶性的聚合物,不过产率很低。我們利用丁基锂与四氯化钛组合的催化剂进行了苯乙炔的聚合,发现这个聚合反应很容易进行,得到可溶于苯的低聚物及不溶于苯的高聚物。現将結果简报于后。更多还原

【Abstract】 In the presence of catalyst composed of n-butyl lithium and titanium tetrachloride in n-hexane solution in a nitrogen atmosphere the polymerization of phenylacetylene took place readily producing polyphenylacetylene in moderate yields. The polymers were partly soluble in benzene and the soluble fraction had an average molecular weight around 1100. The infrared spectra of the polymers showed that they probably have the linear conjugated polyene structure. Electrical measurements of the benzenesoluble fraction indicate a conductivity around 10-11 ohm-1·cm-1 at room temperature and a resistance-temperature relationship which is typical of semiconductors. Magnetic measurements of the same fraction show a paramagnetism of 0.2×10-6cgs unit.更多还原