Direct synthesis of isotactic polypropylene containing a terminal functional group via metallocene catalysis

摘要

Hydrocarbon polymer with a terminal functional group is a very attractive material that possesses unperturbed polymer chain structure and desirable physical properties (such as melting temperature, crystallinity, glass transition temperature, melt flow, etc.) that are almost the same as those of the pure polymer. The terminal reactive group at the polymer chain end has good mobility and can provide a reactive site for many applications, such as adhesion to the substrates, formation of graft and block copolymers, and reactive blending to improve the compatibility of two dissimilar polymer blends. This chain end functionalized polymer structure is particularly useful in polyolefin (PE, PP, EP, s-PS, etc), whose lack of functionality and poor compatibility with other materials has imposed limitations on its applications in many areas, especially in polymer blends and alloys.