An efficient and mild route to highly fluorinated polyolefins via copolymerization of ethylene and 5-perfluoroalkylnorbornenes. Issue 26 (30th May 2019)

• Record Type: Journal Article
• Authors: Ji, Li; Liu, Jia-Shuai; Wang, Xiao-Yan; Li, Jun-Fang; Chen, Zhou; Liao, Saihu; Sun, Xiu-Li; Tang, Yong
• Is Part Of: Polymer chemistry. Volume 10:Issue 26(2019)
• Page Start: 3604
• Page End: 3609
• Publication Date: 2019-05-30
• Subjects: Polymers -- Periodicals; Macromolecules -- Periodicals; Polymerization -- Periodicals; 547.705
• DOI: 10.1039/c9py00009g
• Languages: English
• ISSNs: 1759-9954

Abstract

Abstract : Highly efficient copolymerization of ethylene/5-(perfluoro- n -alkyl)norbornenes has been realized for the synthesis of fluorinated COC for the first time. Abstract : A series of fluorinated polyolefins have been efficiently synthesized via the copolymerization of ethylene with 5-(perfluoro- n -alkyl)norbornenes by employing a class of [ONS] titanium catalysts, which possess an open coordination space environment and exhibit excellent tolerance towards fluorine atoms and excellent catalytic activity (up to 1.60 × 10 6 g (mol h atm) −1 ). Fluorinated polyolefins with high fluorine contents (up to 44.0 wt%) and high molecular weights (3.5–15.9 × 10 4 g mol −1 ) could be obtained under mild conditions. DSC analysis indicated that incorporation of the fluorinated comonomers into polyethylene significantly influences the crystallinity of the polymers ( T m ), while it has little influence on the polymer stability.