给电子体在Ziegler-Natta催化剂中对提高聚丙烯的立构规整性具有非常重要的作用.近年来,研究给电子体的作用机理以及寻找新型的给电子体是该领域的热点,也是Ziegler-Natta催化剂的发展方向.文中综述了近年来在新型给电子体的开发方面的进展,如内给电子体的二醚类化合物,外给电子体的硅烷类等,并总结了有关给电子体作用机理的一般性规律,最后,对该领域的发展进行了展望.
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