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http://hdl.handle.net/1942/29857
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DC Field | Value | Language |
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dc.contributor.author | Stace, Sarah J. | - |
dc.contributor.author | VANDERSPIKKEN, jochen | - |
dc.contributor.author | Howard, Shaun C. | - |
dc.contributor.author | Li, Guoxin | - |
dc.contributor.author | Muir, Benjamin W. | - |
dc.contributor.author | Fellows, Christopher M. | - |
dc.contributor.author | Keddie, Daniel J. | - |
dc.contributor.author | Moad, Graeme | - |
dc.date.accessioned | 2019-10-28T09:01:59Z | - |
dc.date.available | 2019-10-28T09:01:59Z | - |
dc.date.issued | 2019 | - |
dc.identifier.citation | POLYMER CHEMISTRY, 10(37), p. 5044-5051 | - |
dc.identifier.issn | 1759-9954 | - |
dc.identifier.uri | http://hdl.handle.net/1942/29857 | - |
dc.description.abstract | We report on low molar mass cationic RAFT agents that provide predictable molar mass and low molar mass dispersities (D-m) in ab initio emulsion polymerization. Thus RAFT emulsion polymerization of styrene in the presence of the protonated RAFT agent, ((((cyanomethyl) thio)carbonothioyl)(methyl)amino)pyridin-1-ium toluenesulfonate (4), and the analogous methyl-quaternized RAFT agents, 4-((((cyanomethyl)thio)carbonothioyl)(methyl)amino)-1-methylpyridin-1-ium dodecyl sulfate (6), provide low dispersity polystyrene with D-m 1.2-1.4 for M-n similar to 20 000. We postulate that the success of ab initio emulsion polymerization with 4 is due to the hydrophilicity of the pyridinium group, which is such that the water soluble RAFT agent partitions predominantly into the aqueous phase under the conditions of the experiment and that 4 provides little retardation. With 6, when the counterion is dodecyl sulfate, we can achieve "surfactant-free" RAFT emulsion polymerization to provide a low D-m polystyrene. However, the RAFT end-group is lost on isolation of the polymer. Preliminary results show that this class of RAFT agent is broadly applicable in ab initio emulsion polymerization of other more-activated monomers (e.g., butyl acrylate, butyl methacrylate). Furthermore, cyanomethyl(pyridin-4-yl)carbamodithioate (3, the RAFT agent in neutral form) provides molar mass control and D-m < 1.8 in ab initio emulsion polymerization of less activated monomers, specifically, the vinyl esters, vinyl acetate and vinyl benzoate. | - |
dc.description.sponsorship | SJS acknowledges CSIRO Manufacturing for a PhD top-up grant. JV acknowledges CSIRO Manufacturing for an Industrial Traineeship. We are grateful to Roger Mulder, Carl Braybrook and Jo Cosgriff for assistance with NMR and mass spectrometry and to Jacinta White for CryoTEM. | - |
dc.language.iso | en | - |
dc.publisher | ROYAL SOC CHEMISTRY | - |
dc.rights | The Royal Society of Chemistry 2019 | - |
dc.title | Ab initio RAFT emulsion polymerization mediated by small cationic RAFT agents to form polymers with low molar mass dispersity | - |
dc.type | Journal Contribution | - |
dc.identifier.epage | 5051 | - |
dc.identifier.issue | 37 | - |
dc.identifier.spage | 5044 | - |
dc.identifier.volume | 10 | - |
local.format.pages | 8 | - |
local.bibliographicCitation.jcat | A1 | - |
dc.description.notes | [Stace, Sarah J.; Fellows, Christopher M.; Keddie, Daniel J.] Univ New England, Sch Sci & Technol, Armidale, NSW 2351, Australia. [Stace, Sarah J.; Vanderspikken, Jochen; Howard, Shaun C.; Li, Guoxin; Muir, Benjamin W.; Moad, Graeme] CSIRO Mfg, Bag 10, Clayton, Vic 3169, Australia. [Vanderspikken, Jochen] Hasselt Univ, Inst Mat Res IMR, Agoralaan 1 Bldg, B-3590 Diepenbeek, Belgium. [Keddie, Daniel J.] Univ Wolverhampton, Sch Biol Chem & Forens Sci, Wulfruna St, Wolverhampton WV1 1LY, W Midlands, England. | - |
local.publisher.place | CAMBRIDGE | - |
local.type.refereed | Refereed | - |
local.type.specified | Article | - |
dc.identifier.doi | 10.1039/c9py00893d | - |
dc.identifier.isi | 000487564000013 | - |
item.fullcitation | Stace, Sarah J.; VANDERSPIKKEN, jochen; Howard, Shaun C.; Li, Guoxin; Muir, Benjamin W.; Fellows, Christopher M.; Keddie, Daniel J. & Moad, Graeme (2019) Ab initio RAFT emulsion polymerization mediated by small cationic RAFT agents to form polymers with low molar mass dispersity. In: POLYMER CHEMISTRY, 10(37), p. 5044-5051. | - |
item.validation | ecoom 2020 | - |
item.contributor | Stace, Sarah J. | - |
item.contributor | VANDERSPIKKEN, jochen | - |
item.contributor | Howard, Shaun C. | - |
item.contributor | Li, Guoxin | - |
item.contributor | Muir, Benjamin W. | - |
item.contributor | Fellows, Christopher M. | - |
item.contributor | Keddie, Daniel J. | - |
item.contributor | Moad, Graeme | - |
item.fulltext | With Fulltext | - |
item.accessRights | Restricted Access | - |
crisitem.journal.issn | 1759-9954 | - |
crisitem.journal.eissn | 1759-9962 | - |
Appears in Collections: | Research publications |
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stace 1.pdf Restricted Access | Published version | 2.92 MB | Adobe PDF | View/Open Request a copy |
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