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1981年,我们首次研究应用稀土化合物作乙炔定向聚合催化剂,并在室温(30℃)制得高顺式(大于90％),具有金属光泽的银灰色聚乙炔薄膜。本文进一步报导各种稀土络合催化剂在不同聚合条件下制备的聚乙炔的形貌,以及高顺式稀土聚乙炔的晶体结构。研究表明:稀土聚乙炔膜都是由200-650(?)宽而长度不等的混乱微纤维束堆叠组成,但随着催化剂及聚合条件的改变,纤维束的宽度,绞合程度以及堆叠紧密程度有所不同。高顺式稀土聚乙炔系高结晶性聚合物,具有多晶结构,属斜方晶系。
In 1981, we first studied the use of rare earth compounds as acetylene directional polymerization catalyst, and at room temperature (30 ℃) to make high cis (more than 90%), with a metallic luster silver gray polyacetylene film. This article further reports the morphology of polyacetylene prepared under different polymerization conditions of various rare earth complex catalysts, as well as the crystal structure of high cis-polyacetylene. The results show that all the rare earth polyacetylene films consist of a stack of chaotic microfiber bundles with a width of 200-650 (?) And a varying length. However, as the catalyst and polymerization conditions change, the width of the bundles, the strandedness and the closeness of the stack The degree is different. High cis-type polyacetylene-based high crystalline polymer, with a polycrystalline structure, is a rhombic system.