本文综述了近年来以不同催化体系合成具有不同支化拓扑结构聚烯烃的研究进展。传统的方法主要是通过乙烯自由基聚合和前过渡金属催化剂催化乙烯与α-烯烃共聚来合成支化聚乙烯。其中,原位共聚法可合成具有不同支化度、不同支链长度的支化聚乙烯。新发展起来的后过渡金属催化剂,不仅可以催化单一乙烯合成出支化、超支化,甚至是树枝状等一系列不同拓扑结构的聚乙烯,而且可以催化乙烯与极性单体共聚得到末端功能化聚乙烯。 This review summarizes recent progress in the synthesis of polyolefins with different branched topologies using different catalytic systems. The traditional method is mainly to synthesize branched polyethylene by copolymerization of ethylene and α-olefin by ethylene radical polymerization and pre-transition metal catalyst. Among them, the in situ copolymerization method can be synthesized with different degrees of branching, branched-chain length of different branched polyethylene. The newly developed post-transition metal catalyst not only can catalyze a series of different topologies of polyethylene, such as branched, hyperbranched and even dendritic branched polyethylene, but also can catalyze the copolymerization of ethylene with polar monomers to obtain terminal functionalized Polyethylene.