Issue 45, 2021

Well-defined cyclic polymer synthesis via an efficient etherification-based bimolecular ring-closure strategy

Abstract

The synthesis of cyclic polymers on a large scale is a challenging task for polymer scientists due to the requirement of ultra-high dilution conditions. In this paper, we demonstrate an alternative method to prepare cyclic polymers with moderate dilution and up to 1 gram scale. We employed a simple Williamson etherification reaction to prepare cyclic polymers with a good solvent/non-solvent combination. In this way, various polystyrene (PS) and polyethylene glycol (PEG) cyclic homopolymers were synthesized. Anionic polymerization using high vacuum techniques combined with the postpolymerization reaction was used to generate linear dihydroxy PS precursors. The synthesized linear and cyclic homopolymers were fully characterized using various spectroscopic and analytical techniques, such as size exclusion chromatography (SEC), matrix-assisted laser desorption/ionization time-of-flight mass spectroscopy (MALDI-TOF-MS), and differential scanning calorimetry (DSC). Detailed nuclear magnetic resonance (NMR) spectroscopic studies were also performed to obtain the complete structural information of the synthesized polymers.

Graphical abstract: Well-defined cyclic polymer synthesis via an efficient etherification-based bimolecular ring-closure strategy

Supplementary files

Article information

Article type
Paper
Submitted
06 10月 2021
Accepted
26 10月 2021
First published
28 10月 2021
This article is Open Access
Creative Commons BY-NC license

Polym. Chem., 2021,12, 6616-6625

Well-defined cyclic polymer synthesis via an efficient etherification-based bimolecular ring-closure strategy

S. Sharma, K. Ntetsikas, V. Ladelta, S. Bhaumik and N. Hadjichristidis, Polym. Chem., 2021, 12, 6616 DOI: 10.1039/D1PY01337H

This article is licensed under a Creative Commons Attribution-NonCommercial 3.0 Unported Licence. You can use material from this article in other publications, without requesting further permission from the RSC, provided that the correct acknowledgement is given and it is not used for commercial purposes.

To request permission to reproduce material from this article in a commercial publication, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party commercial publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements