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Preparation of inverse polymerized high internal phase emulsions using an amphiphilic macro-RAFT agent as sole stabilizer

Citation

Khodabandeh, A and Arrua, RD and Desire, CT and Rodemann, T and Bon, SAF and Thickett, SC and Hilder, EF, Preparation of inverse polymerized high internal phase emulsions using an amphiphilic macro-RAFT agent as sole stabilizer, Polymer Chemistry, 7, (9) pp. 1803-1812. ISSN 1759-9954 (2016) [Refereed Article]

Copyright Statement

This journal is © The Royal Society of Chemistry 2016

DOI: doi:10.1039/c5py02012c

Abstract

Oil-in-water (‘inverse’) High Internal Phase Emulsions (HIPEs) have been prepared using an amphiphilic macro-RAFT agent with toluene as the internal dispersed phase (∼80 vol%) and an aqueous monomer solution as the continuous phase. The water phase consisted of the monomers acrylamide (AM) and N,N′-methylenebisacrylamide (MBAM), an initiator as well as the amphiphilic macro-RAFT agent, that is 2-(butylthiocarbonothioylthio)-2-poly(n-butyl acrylate)-b-poly(acrylic acid), which was used as an anionic polymeric surfactant. The presence of these amphiphilic species allowed the successful preparation of a polyHIPE upon polymerization. The effect of concentration of macro-RAFT agent, pH, initiator, hexadecane as an organic modifier and the polymerization temperature on the morphology of the resulting porous materials was investigated. Varying the lengths of the hydrophilic and hydrophobic blocks of the macro-RAFT agent resulted in polyHIPEs with different porous structures. The presence of RAFT functionality in the polyHIPE was confirmed by elemental analysis, EDX-SEM, Raman and FT-IR spectroscopies. Raman mapping revealed full coverage of the void walls with dithiocarbamate groups.

Item Details

Item Type:Refereed Article
Research Division:Chemical Sciences
Research Group:Analytical Chemistry
Research Field:Separation Science
Objective Division:Expanding Knowledge
Objective Group:Expanding Knowledge
Objective Field:Expanding Knowledge in the Chemical Sciences
Author:Khodabandeh, A (Mr Aminreza Khodabandeh)
Author:Arrua, RD (Dr Dario Arrua)
Author:Desire, CT (Mr Christopher Desire)
Author:Rodemann, T (Dr Thomas Rodemann)
Author:Thickett, SC (Dr Stuart Thickett)
Author:Hilder, EF (Professor Emily Hilder)
ID Code:107802
Year Published:2016
Web of Science® Times Cited:4
Deposited By:Chemistry
Deposited On:2016-03-24
Last Modified:2017-10-24
Downloads:0

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