通用高分子材料高性能化研究的一个主要内容是聚烯烃(聚乙烯和聚丙烯)的高性能化和功能化。但是,由于聚烯烃大分子的化学惰性,其化学(分子)改性和物理(材料)改性都存在很大困难。近年来,烯烃聚合催化剂技术不断进步,烯烃聚合理论研究持续深入,从而为通过分子设计手段以可控方式在聚烯烃中引入化学活泼基团而制备结构明确和组成均匀的反应性聚烯烃奠定了基础。本文从反应性聚烯烃的分子设计、催化聚合以及其在聚烯烃高性能化研究中的应用等几个方面综述了近年来反应性聚烯烃领域的研究进展,并对此领域今后的研究发展方向提出了建议。
One of the major subjects for the research of commodity polymer property upgrading is to uplift the overall performance of polyolefins (polyethylene and polypropylene), realizing a transformation of polyolefins from a commodity polymer to a high-performance or functional one. However, the chemical inertia of polyolefins makes both the chemical (in a molecular level) and physical (in a material level) modifications very difficult. In recent years, both the catalyst itself and understanding of its catalytic mechanism for olefin coordination polymerization have advanced prodigiously, which established a solid foundation for the synthesis of well-defined reactive polyolefins through molecular design. This review covers the recent achievement in the field of reactive polyolefins, including their molecular design, catalytic polymerization, and application, based on which a future prospect is foreseen.