Polymerization‐Induced Self‐Assembly under Compressed CO2: Control of Morphology Using a CO2‐Responsive MacroRAFT Agent. Issue 2 (2nd September 2018)

• Record Type: Journal Article
• Authors: Zhou, Dewen; Kuchel, Rhiannon P.; Dong, Siming; Lucien, Frank P.; Perrier, Sébastien; Zetterlund, Per B.
• Other Names: Lansalot Muriel guestEditor.; Rieger Jutta guestEditor.
• Is Part Of: Macromolecular rapid communications. Volume 40:Issue 2(2019)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2018-09-02
• Subjects: aqueous dispersion polymerization -- CO2‐responsive polymers -- controlled/living radical polymerization -- polymerization‐induced self‐assembly; Macromolecules -- Periodicals; Polymers -- Periodicals; Chemistry -- Periodicals; 547.705
• DOI: 10.1002/marc.201800335
• Languages: English
• ISSNs: 1022-1336

Abstract

Abstract: Polymerization‐induced self‐assembly of 2‐hydroxypropyl methacrylate is conducted in water and water/MeOH using a CO2 ‐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 CO2 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 CO2 pressure during polymerization in the range of 10–45 bar. Abstract : A compressed CO2 PISA system is developed, which allows precise tuning of particle morphologies via the CO2 pressure without making any alterations to the polymerization recipe or any other experimental conditions. A range of morphologies, including spherical particles, worms, and vesicles, can be accessed by simple adjustment of the CO2 pressure.