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Polymerization‐Induced Self‐Assembly under Compressed CO 2 : Control of Morphology Using a CO 2 ‐Responsive MacroRAFT Agent
Author(s) -
Zhou Dewen,
Kuchel Rhian P.,
Dong Siming,
Lucien Frank P.,
Perrier Sébastien,
Zetterlund Per B.
Publication year - 2019
Publication title -
macromolecular rapid communications
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.348
H-Index - 154
eISSN - 1521-3927
pISSN - 1022-1336
DOI - 10.1002/marc.201800335
Subject(s) - copolymer , materials science , polymer chemistry , polymerization , ethylene glycol , methacrylate , protonation , chemical engineering , methyl methacrylate , chemistry , polymer , composite material , organic chemistry , engineering , ion
Polymerization‐induced self‐assembly of 2‐hydroxypropyl methacrylate is conducted in water and water/MeOH using a CO 2 ‐responsive macroRAFT agent in the form of a statistical copolymer comprising N,N ‐diethylaminoethyl methacrylate (DEAEMA) and poly(ethylene glycol) methyl ether methacrylate ( M n = 475 g mol −1 ). Pressurization with CO 2 leads to protonation of DEAEMA units within the stabilizer block, thereby offering a means of adjusting the charge density of the coronal layer. It is demonstrated that a wide range of tunable particle morphologies are accessible by simply varying the CO 2 pressure during polymerization in the range of 10–45 bar.