Please use this identifier to cite or link to this item:
http://hdl.handle.net/1942/30017
Title: | Rapid Oxygen Tolerant Aqueous RAFT Photopolymerization in Continuous Flow Reactors | Authors: | ZAQUEN, Neomy Kadir, Ak M. N. B. P. H. A. Iasa, Afiq Corrigan, Nathaniel JUNKERS, Tanja Zetterlund, Per B. Boyer, Cyrille |
Issue Date: | 2019 | Publisher: | AMER CHEMICAL SOC | Source: | MACROMOLECULES, 52(4), p. 1609-1619 | Abstract: | Recently, new controlled polymerization pathways have emerged for the synthesis of functional polymer materials. The use of light, particularly visible light, to generate radicals has shown to be beneficial over thermal induction due to the high control over reaction parameters as well as spatiotemporal control. Although numerous photopolymerizations have been performed in batch, additional initiators or activators are often needed to increase the overall yield, making this process time-consuming and costly; optical path lengths directly correlate with achievable space-time yields. The use of flow reactors is in this case advantageous. In this work, new synthetic protocols are demonstrated for the synthesis of di- and triblock copolymers in tubular reactors via photoinduced electron/energy transfer-reversible addition-fragmentation chain transfer (PET-RAFT) polymerization. Within just 10 min of polymerization time, full monomer conversion was reached for a variety of acrylamides and acrylates, and polymers with molecular weights up to 100000 g mol(-1) and high end-group fidelity were obtained. Changing the flow rates, concentrations, and light intensity allowed alteration of the molecular weights, and several di- and triblock copolymers were synthesized, indicating the high level of control over the polymerization. In addition, multiple flow reactors were coupled to allow the synthesis of triblock copolymers in a reactor cascade process without the need for intermediate purification. The attractiveness of this approach is illustrated by considering that a PDMAA-b-PDMAA-b-PDMAA triblock copolymer with a number-average molecular weight of 3200 g mol(-1) and dispersity of 1.24 could be theoretically obtained at a rate of 300 g/day. | Notes: | [Zaquen, Neomy; Kadir, Ak M. N. B. P. H. A.; Iasa, Afiq; Corrigan, Nathaniel; Zetterlund, Per B.; Boyer, Cyrille] Univ New South Wales, Ctr Adv Macromol Design CAMD, Sydney, NSW 2052, Australia. [Zaquen, Neomy; Corrigan, Nathaniel; Boyer, Cyrille] Univ New South Wales, Australian Ctr Nanomed, Sydney, NSW 2052, Australia. [Zaquen, Neomy; Junkers, Tanja] Univ Hasselt, Organ & Biopolymer Chem OBPC, Agoralaan Bldg D, B-3590 Diepenbeek, Belgium. [Junkers, Tanja] Monash Univ, Sch Chem, Polymer React Design Grp, Melbourne, Vic 3800, Australia. | Document URI: | http://hdl.handle.net/1942/30017 | ISSN: | 0024-9297 | e-ISSN: | 1520-5835 | DOI: | 10.1021/acs.macromol.8b02628 | ISI #: | 000460199600024 | Rights: | 2019 American Chemical Society | Category: | A1 | Type: | Journal Contribution | Validations: | ecoom 2020 |
Appears in Collections: | Research publications |
Files in This Item:
File | Description | Size | Format | |
---|---|---|---|---|
zaquen 1.pdf Restricted Access | Published version | 3.73 MB | Adobe PDF | View/Open Request a copy |
SCOPUSTM
Citations
12
checked on Sep 3, 2020
WEB OF SCIENCETM
Citations
60
checked on Oct 14, 2024
Page view(s)
132
checked on Sep 5, 2022
Download(s)
114
checked on Sep 5, 2022
Google ScholarTM
Check
Altmetric
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.