Jump to main content
Jump to site search
Access to RSC content Close the message box

Continue to access RSC content when you are not at your institution. Follow our step-by-step guide.


Issue 14, 2020
Previous Article Next Article

Influence of an ionic comonomer on polymerization-induced self-assembly of diblock copolymers in non-polar media

Author affiliations

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 ([NDod4]+[SPMA]) into the oil-insoluble PBzMA block. According to the literature (M. J. Derry, et al., Chem. Sci., 2016, 7, 5078–5090), PSMA18–PBzMA diblock copolymers only form spheres using this formulation for any core degree of polymerization. Unexpectedly, incorporating just a small fraction (<6 mol%) of [NDod4]+[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 PSMA34 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.

Graphical abstract: Influence of an ionic comonomer on polymerization-induced self-assembly of diblock copolymers in non-polar media

Back to tab navigation

Supplementary files

Article information


Submitted
20 Jan 2020
Accepted
22 Feb 2020
First published
26 Feb 2020

Polym. Chem., 2020,11, 2605-2614
Article type
Paper

Influence of an ionic comonomer on polymerization-induced self-assembly of diblock copolymers in non-polar media

G. N. Smith, S. L. Canning, M. J. Derry, O. O. Mykhaylyk, S. E. Norman and S. P. Armes, Polym. Chem., 2020, 11, 2605
DOI: 10.1039/D0PY00101E

Social activity

Search articles by author

Spotlight

Advertisements