无规立构

实验表明，该催化体系对Bt聚合催化效率可达34.8kg／g，聚合物为全同立构和无规立构聚1－丁烯的混合物。

The catalytic efficiency was more than 34.8 kg / g . The poly ( 1-butene )( PBt ) included both isotactic structure and atactic structure .

由实验得到以下主要结论：PA-18降凝剂结构中全同立构聚合物含量最少，间同立构聚合物含量最多，无规立构聚合物含量介于两者之间。

It was concluded from the experiment that the content of the isotactic polymer was the lest , the syndiotactic polymer was the most and the atactic polymer was between them .

无规立构PSt稀溶液的性质和分子链尺寸

Dilute solution properties and molecule chain dimensions of atactic polystyrene

结果表明，聚醚的序列结构以头-尾相连为主且呈无规立构分布的特点。

Results showed that head-tail addition and atactic structure were dominant in polyether microstructure .

本文报导了有规立构聚苯乙烯，无规立构聚苯乙烯和1∶1混合有规和无规立构聚苯乙烯的分级、粘度和光散射测试结果。

The fractionation , viscosity and light-scattering measurements for three types of polystyrene , i.e. , atactic , isotactic and 1:1 mixture of the two , were studied .