Chen Yanjun, Dong Haiqian
Ningbo Key Laboratory of High Performance Petroleum Resin Preparation Engineering and Technology, Ningbo Polytechnic, Ningbo 315800, China.
College of Chemical Engineering, Ningbo Polytechnic, Ningbo 315800, China.
Molecules. 2024 Dec 26;30(1):39. doi: 10.3390/molecules30010039.
Polyolefins are used widely due to their benefits such as being lightweight, chemical inertness, low cost, tunable properties, and easy processability. However, their nonpolar nature significantly limits their high-end applications. The non-bridged half-titanocenes exhibit remarkable catalytic activities with good comonomer incorporations in the olefin polymerization. The synthesis of functional polyolefins has attracted more and more attention recently. The non-bridged half-titanocenes have been used in the preparation of functional polyolefins, in particular the functional olefin copolymers. Herein, the recent advancements in the synthesis of functional polyolefins by non-bridged half-titanocenes were reviewed. The functional polyolefins have been synthesized by direct copolymerization of olefin with functional comonomers using half-titanocenes as precatalysts. In addition, polyolefins containing reactive groups could be synthesized by the olefin (co)polymerization using half-titanocenes as precatalysts. The functional polyolefins were synthesized successfully by the post-functionalization of polyolefin containing reactive groups.
聚烯烃因其具有诸如重量轻、化学惰性、成本低、性能可调以及易于加工等优点而被广泛使用。然而，它们的非极性本质极大地限制了其高端应用。非桥连半茂钛在烯烃聚合中表现出显著的催化活性以及良好的共聚单体插入率。近年来，功能性聚烯烃的合成越来越受到关注。非桥连半茂钛已被用于制备功能性聚烯烃，特别是功能性烯烃共聚物。在此，综述了非桥连半茂钛合成功能性聚烯烃的最新进展。使用半茂钛作为预催化剂，通过烯烃与功能性共聚单体直接共聚合成了功能性聚烯烃。此外，以半茂钛作为预催化剂，通过烯烃（共）聚合可以合成含有反应性基团的聚烯烃。通过对含有反应性基团的聚烯烃进行后功能化成功合成了功能性聚烯烃。
