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Issue 30, 2019
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Alcohol mediated degenerate chain transfer controlled cationic polymerisation of para-alkoxystyrene

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Abstract

In this report we demonstrate methanol as an effective degenerative chain transfer agent to control the cationic polymerisation (initiated by triflic acid) of electron rich p-alkoxy-styrenes, such as p-methoxystyrene (p-MOS). Kinetic analysis revealed that an induction period occurs initially during which free cationic polymerisation occurs at low monomer conversion before proceeding through the pseudo first order rate, analogous to the RAFT mechanism. Ethanol and isopropanol also demonstrated excellent control (Đ > 1.30), however, with an apparent increase in experimental molecular weight. Furthermore, methanol controlled polymers were successfully chain extended upon sequential monomer addition, demonstrating the ‘livingness’ of the alcohol mediated cationic polymerisation.

Graphical abstract: Alcohol mediated degenerate chain transfer controlled cationic polymerisation of para-alkoxystyrene

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Article information


Submitted
01 Apr 2019
Accepted
22 Jun 2019
First published
24 Jun 2019

Polym. Chem., 2019,10, 4126-4133
Article type
Paper
Author version available

Alcohol mediated degenerate chain transfer controlled cationic polymerisation of para-alkoxystyrene

A. Prasher, H. Hu, J. Tanaka, D. A. Nicewicz and W. You, Polym. Chem., 2019, 10, 4126
DOI: 10.1039/C9PY00480G

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