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Exploitation of compartmentalization in RAFT miniemulsion polymerization to increase the degree of livingness
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Khan, Murtaza, Guimarães, Thiago R., Zhou, Dewen, Moad, Graeme, Perrier, Sébastien and Zetterlund, Per B. (2019) Exploitation of compartmentalization in RAFT miniemulsion polymerization to increase the degree of livingness. Journal of Polymer Science Part A: Polymer Chemistry, 57 (18). pp. 1938-1946. doi:10.1002/pola.29329 ISSN 0887-624X.
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Official URL: http://dx.doi.org/10.1002/pola.29329
Abstract
It is demonstrated that the degree of livingness (chain-end fidelity) in RAFT polymerization for a given degree of polymerization can be markedly increased in miniemulsion polymerization relative to the corresponding homogeneous bulk system. Polymerization of styrene was conducted using a poly(methyl methacrylate) benzodithioate as macroRAFT agent in both miniemulsion and bulk. The substantially higher polymerization rate in miniemulsion, which is attributed to the segregation effect (compartmentalization) causing a reduction in the rate of bimolecular termination, makes it possible to reach a given degree of polymerization in a significantly shorter time than in the corresponding bulk system. As a consequence, fewer initiating radicals are required throughout the polymerization, leading to higher livingness in the more rapid miniemulsion system. It is demonstrated how this approach facilitates synthesis of high molecular weight block copolymers comprising slowly propagating monomers such as styrene and methacrylates.
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): | Addition polymerization, Fragmentation reactions, Emulsion polymerization | ||||||||
Journal or Publication Title: | Journal of Polymer Science Part A: Polymer Chemistry | ||||||||
Publisher: | John Wiley & Sons Ltd. | ||||||||
ISSN: | 0887-624X | ||||||||
Official Date: | 15 September 2019 | ||||||||
Dates: |
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Volume: | 57 | ||||||||
Number: | 18 | ||||||||
Page Range: | pp. 1938-1946 | ||||||||
DOI: | 10.1002/pola.29329 | ||||||||
Status: | Peer Reviewed | ||||||||
Publication Status: | Published | ||||||||
Reuse Statement (publisher, data, author rights): | This is the peer reviewed version of the following article: Khan, M. , Guimarães, T. R., Zhou, D. , Moad, G. , Perrier, S. and Zetterlund, P. B. (2019), Exploitation of Compartmentalization in RAFT Miniemulsion Polymerization to Increase the Degree of Livingness. J. Polym. Sci. Part A: Polym. Chem.. doi:10.1002/pola.29329, which has been published in final form at https://doi.org/10.1002/pola.29329. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Versions. | ||||||||
Access rights to Published version: | Restricted or Subscription Access | ||||||||
Date of first compliant deposit: | 9 April 2019 | ||||||||
Date of first compliant Open Access: | 5 February 2020 | ||||||||
RIOXX Funder/Project Grant: |
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