NDLI: Synthesis of ultrahigh molar mass poly(2-hydroxyethyl methacrylate) by single-electron transfer living radical polymerization

Content Provider	Royal Society of Chemistry (RSC)
Author	Percec, Virgil Nguyen, Nga H. Leng, Xuefei
Copyright Year	2013
Abstract	Cu(0)/Me6-TREN mediated SET-LRP of 2-hydroxyethyl methacrylate (HEMA) initiated with methyl α-bromophenylacetate (MBrPA) was performed in DMSO at 25 °C targeting [M]0/[I]0 = 100 to 10 000. At [M]0/[I]0 = 100, SET-LRP of HEMA is a living process, and provided PHEMA with Mn = 21 500 g mol−1 and Mw/Mn = 1.20 in 7 h. Using similar conditions, PHEMA with Mn = 35 000 to 152 200 g mol−1 and Mw/Mn = 1.28 to 1.39 was prepared within 9 h. When targeting higher [M]0/[I]0 (2000 to 10 000), Me6-TREN concentration was changed to 0.15 equivalent with respect to initiator concentration, for at higher ligand concentration the polymerization did not proceed beyond 30% conversion even after a long reaction time. PHEMA with Mn = 333 500 to 1 017 900 g mol−1 and Mw/Mn lower than 1.50 was synthesized for the first time by direct polymerization of HEMA without protecting the hydroxyl group.
Starting Page	2760
Ending Page	2766
Page Count	7
File Format	HTM / HTML PDF
ISSN	17599954
Volume Number	4
Issue Number	9
Journal	Polymer Chemistry
DOI	10.1039/c3py00224a
Language	English
Publisher	Royal Society of Chemistry
Access Restriction	Open
Subject Keyword	Hydroxy group Historical European martial arts DMSO Ligand (Hydroxyethyl)methacrylate Dimethyl sulfoxide Polymerization
Content Type	Text
Resource Type	Article
Subject	Organic Chemistry Biochemistry Bioengineering Biomedical Engineering Polymers and Plastics

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