Affiliation:
1. Provincial Key Laboratory of Polyolefin New Materials, College of Chemistry & Chemical Engineering, The Northeast Petroleum University, Daqing 163318, China
2. PetroChina Petrochemical Research Institute, PetroChina Company Limited, Beijing 102206, China
Abstract
Syndiotactic polystyrene (SPS) refers to a type of thermoplastic material with phenyl substituents that are alternately chirally attached on both sides of an aliphatic macromolecular main chain. Owing to its excellent physical and mechanical properties, as well as its chemical stability, high transparency, and electrical insulation characteristics, SPS is used in a wide variety of technical fields. SPS is commonly produced via the stereoselective transition metal-catalyzed coordination polymerization method mediated by stereospecific catalysts, which consists of anionic mono-cyclopentadienyl derivative η5-coordinated single active metal centers (referred to as “mono-Cp’-M”), with active center metals involving Group 4 transition metals (with an emphasis on titanium) and rare-earth (RE) metals of the periodic table. In this context, the use of mono-cyclopentadienyl titanocene (mono-Cp’Ti) catalysts and mono-cyclopentadienyl rare-earth metal (mono-Cp’RE) metallocene catalysts for the syndiospecific polymerization of styrene is discussed. The effects of the mono-cyclopentadienyl ligand structure, cationic active metal types, and cocatalysts on the activity and syndiospecificity of mono-Cp’ metallocene catalysts are briefly surveyed.
Funder
National Natural Science Foundation of China
Subject
Chemistry (miscellaneous),Analytical Chemistry,Organic Chemistry,Physical and Theoretical Chemistry,Molecular Medicine,Drug Discovery,Pharmaceutical Science
Reference74 articles.
1. Saunders, K.J. (1988). Organic Polymer Chemistry, Chapman & Hall. [2nd ed.].
2. Recent advances on improving the mechanical and thermal properties of kenaf fibers/engineering thermoplastic composites using novel coating techniques: A review;Owen;Compos. Interface,2023
3. Yang, J.S., Fang, Y.W., and Zhu, M. (2017). An Acrylonitrile-Butadiene-Styrene Copolymer Composition and Its Preparation Method. (CN201710737281.2).
4. Advances in Pretreatments for Electroless Copper Plating on Polymer Materials;Zheng;Acta Chim. Sin.,2022
5. Yang, J.S., and He, J. (2018). A Modified Acrylate-Styrene-Acrylonitrile Copolymer for Solar Water Heater Housing and a Preparation Method Thereof. (CN201811433550.7).