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Synthesis of poly(2-ethyl-2-oxazoline)-b-poly(styrene) copolymers via a dual initiator route combining cationic ring-opening polymerization and atom transfer radical polymerization
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Becer, C. Remzi, Paulus, Renzo M., Höppener, Stephanie, Hoogenboom, Richard, Fustin, Charles-André, Gohy, Jean-François and Schubert, Ulrich S. (2008) Synthesis of poly(2-ethyl-2-oxazoline)-b-poly(styrene) copolymers via a dual initiator route combining cationic ring-opening polymerization and atom transfer radical polymerization. Macromolecules, Vol.41 (No.14). pp. 5210-5215. doi:10.1021/ma800527h ISSN 0024-9297 .
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Official URL: http://dx.doi.org/10.1021/ma800527h
Abstract
Block copolymers of 2-ethyl-2-oxazoline (EtOx) and styrene were synthesized by a combination of cationic ring-opening polymerization (CROP) and atom transfer radical polymerization (ATRP). Initially, a detailed kinetic investigation for the α-bromoisobutyrylbromide (BrEBBr) initiated CROP of EtOx was performed in acetonitrile at different polymerization temperatures ranging from 100 to 180 °C under microwave irradiation. Poly(2-ethyl-2-oxazoline) (PEtOx) homopolymers with controlled molecular weights and narrow polydispersity indices were synthesized in short reaction times. Polymers with relatively high molar masses and low polydispersity indices (Mn,SEC = 48 500 g/mol, PDI = 1.29) could also be obtained. Following the synthesis of a PEtOx macroinitiator (Mn,SEC = 3700 g/mol, PDI = 1.09), the ATRP of styrene was performed with CuBr and tris[2-(dimethylamino)ethyl]amine (Me6Tren) as catalytic system. The micellization behavior of the obtained amphiphilic block copolymers was further investigated by dynamic light scattering (DLS) and atomic force microscopy (AFM).
Item Type: | Journal Article | ||||
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Subjects: | Q Science > QD Chemistry | ||||
Divisions: | Faculty of Science, Engineering and Medicine > Science > Chemistry | ||||
Library of Congress Subject Headings (LCSH): | Polymerization, Ring-opening polymerization, Copolymers | ||||
Journal or Publication Title: | Macromolecules | ||||
Publisher: | American Chemical Society | ||||
ISSN: | 0024-9297 | ||||
Official Date: | 2008 | ||||
Dates: |
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Volume: | Vol.41 | ||||
Number: | No.14 | ||||
Page Range: | pp. 5210-5215 | ||||
DOI: | 10.1021/ma800527h | ||||
Status: | Peer Reviewed | ||||
Publication Status: | Published | ||||
Funder: | Dutch Polymer Institute (DPI) | ||||
Grant number: | 502 (DPI) |
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