Smith, Gregory N, Canning, Sarah, Derry, Matthew J, Mykhaylyk, Oleksandr O, Youngs, Sarah Elizabeth and Armes, Steven P (2020). Influence of an ionic comonomer on polymerization-induced self-assembly of diblock copolymers in non-polar media. Polymer Chemistry, 11 (14), pp. 2605-2614.
Abstract
A series of poly(stearyl methacrylate)-poly(benzyl methacrylate) (PSMA-PBzMA) diblock copolymer nano-objects has been synthesized via reversible addition-fragmentation chain-transfer (RAFT) dispersion polymerization in n-dodecane at 20 wt%. This polymerization-induced self-assembly (PISA) formulation was modified by the incorporation of an anionic monomer, tetradodecylammonium 3-sulfopropyl methacrylate ([NDod 4] +[SPMA] -) into the oil-insoluble PBzMA block. According to the literature (M. J. Derry, et al., Chem. Sci., 2016, 7, 5078-5090), PSMA 18-PBzMA diblock copolymers only form spheres using this formulation for any core degree of polymerization. Unexpectedly, incorporating just a small fraction (<6 mol%) of [NDod 4] +[SPMA] - comonomer into the structure-directing block resulted in the formation of non-spherical diblock copolymer nano-objects, including pure worm-like and vesicular morphologies. However, only spherical micelles could be formed using a longer PSMA 34 stabilizer. These diblock copolymer nano-objects were characterized by transmission electron microscopy, small-angle X-ray scattering, and dynamic light scattering. The bulky nature of the ionic comonomer appears to make it possible to avoid the kinetically-trapped sphere morphology. This study reveals a new approach for tuning the morphology of diblock copolymer nano-objects in non-polar media.
Publication DOI: | https://doi.org/10.1039/D0PY00101E |
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Divisions: | College of Engineering & Physical Sciences College of Engineering & Physical Sciences > School of Infrastructure and Sustainable Engineering > Chemical Engineering & Applied Chemistry College of Engineering & Physical Sciences > Aston Institute of Materials Research (AIMR) College of Engineering & Physical Sciences > Aston Polymer Research Group |
Additional Information: | © The Royal Society of Chemistry 2020 |
Uncontrolled Keywords: | Bioengineering,Biochemistry,Polymers and Plastics,Organic Chemistry |
Publication ISSN: | 1759-9962 |
Last Modified: | 30 Sep 2024 12:22 |
Date Deposited: | 13 Mar 2020 12:35 |
Full Text Link: | |
Related URLs: |
http://pubs.rsc ... 0/PY/D0PY00101E
(Publisher URL) http://www.scop ... tnerID=8YFLogxK (Scopus URL) |
PURE Output Type: | Article |
Published Date: | 2020-04-14 |
Published Online Date: | 2020-02-26 |
Accepted Date: | 2020-02-22 |
Authors: |
Smith, Gregory N
Canning, Sarah Derry, Matthew J ( 0000-0001-5010-6725) Mykhaylyk, Oleksandr O Youngs, Sarah Elizabeth Armes, Steven P |