共轭高分子的研究——Ⅶ.脂肪腈类的聚合

<正> 聚腈作为新的一类共轭高分子而引起注意。本文在前报的基础上进一步选择了一系列脂肪腈(乙腈、丙腈、戊腈、庚腈和苯乙腈),系统地研究它们在络合能力较强的付氏试剂(BF_3和TiCl_4等)作用下的聚合反应与机理,同时测定了各聚腈的物理性能。 1.腈的络合聚合 腈类与付氏试剂可形成定组成的络合物结晶:

STUDIES ON CONJUGATED POLYMERS Ⅶ. Polymerization of Aliphatic Nitriles

With Friedel-Crafts reagents,, the polymerization of a series of aliphatic nitriles, including acetonitrile, propionitrile, n-valeronitrile, n-oenantionitrile and phenylaceto-nitrile, has been studied. The results show that the polymerization ability of these nitriles decreases with the increase of aliphatic chain-length. Polynitriles are a new type of conjugated polymer with the following chain structure: [(R)C = N]p, R = CH₃, C₂H₅,n-C₄H₉, n-C₆H₁₃, C₆H₅CH₂. The complexes of nitriles with metal halides, such as BF₃, TiCl₄ ets., play an important role in the polymerization mechanism. The semi-conductivety and heat resistance of polynitriles were determined.