Synthesis of functional polyethylene via scandium catalysted copolymerization of ethylene with triphenylamine- or carbazole-substituted styrene derivatives. (15th February 2022)

• Record Type: Journal Article
• Authors: Mu, Xiaochun; Han, Li; Leng, Xuefei; Li, Yang
• Is Part Of: Polymer. Volume 241(2022)
• Publication Date: 2022-02-15
• Subjects: Functionalized polyethylene -- Rare-earth catalyst -- Triphenylamine -- Carbazole; Polymers -- Periodicals; Polymerization -- Periodicals; Polymères -- Périodiques; Polymérisation -- Périodiques; 547.7
• DOI: 10.1016/j.polymer.2022.124548
• Languages: English
• ISSNs: 0032-3861

Abstract

Abstract: The copolymerization of ethylene with triphenylamine or carbazole substituted styrene derivatives was achieved to prepared functional polyethylene with pendant triphenylamine or carbazole groups using a rare earth metal catalyst (C5 Me4 SiMe3 )Sc(CH2 SiMe3 )2 (THF). The catalyst system showed high activity for the copolymerization of ethylene with triphenylamine or carbazole substituted styrene derivatives, affording copolymers with moderate molecular weight and narrow molecular weight distribution. In addition, the content of styrene derivatives in the copolymers can be adjusted by changing the feeding amount. Inspection of the aliphatic region of the 13 C NMR spectrum reveal the random or pseudo- random sequence structure of the copolymers. Representative photophysical properties such as UV–vis absorption and fluorescence spectroscopy of the copolymers with different content have been characterized. Graphical abstract: The copolymerization of ethylene with triphenylamine or carbazole substituted styrene derivatives were successfully achieved by rare-earth metal catalyst, affording copolymers with random or pseudo -random sequence distributions structure and adjustable functional group content. The copolymers have good photophysical properties and significantly improved hydrophilicity. Image 1 Highlights: Triphenylamine or carbazole functionalized polyethylene was synthesized. The copolymers have random or pseudo -random sequence distributions structure. The content of triphenylamine or carbazole groups in the copolymers is adjustable.