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Aggregation and solubilization of organic solvents and petrol/gasoline in water mediated by block copolymers
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Munoz-Bonilla, Alexandra, Fernandez-Garcia, Marta, Cerrada, Maria L., Mantovani, Giuseppe and Haddleton, David M.. (2007) Aggregation and solubilization of organic solvents and petrol/gasoline in water mediated by block copolymers. European Polymer Journal, Vol.43 (No.11). pp. 4583-4592. ISSN 0014-3057
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Official URL: http://dx.doi.org/10.1016/j.eurpolymj.2007.08.017
Abstract
A series of AB and ABA block copolymers of pDEGMEMA-b-pCHMA and pCHMA-b-pDEGMEMA-b-pCHMA cyclohexyl methacrylate (CHMA) and di(ethylene glycol) methyl ether methacrylate (DEGMEMA) with M. ranging between 18,000 and 50,000 g mol(-1) and PD1 = 1.09-1.32 were prepared via copper(l) mediated living radical polymerization with pyridylmethanimine ligands. Aggregation properties were investigated using a combination of H-1 NMR, dynamic and static light scattering. For comparative purposes poly(CHMA) and poly(DEGMEMA) homopolymers were prepared. The CAC values estimated for the di- and triblock copolymers soluble in cyclohexane are lower than 0.005 g L-1 whereas the values found for block copolymers in methanol solutions are less than 0.070 g L-1. DLS analysis showed the presence of micellar aggregates with diameters ranging from 25 to 40 nm with particle polydispersity indexes between 0.003 and 0.183. The pCHMA-b-pDEGMEMA-b-pCHMA micelles solubilized the aqueous phase in petrol/gasoline. The block copolymer-based micelles incorporate water within their hydrophilic domains, potentially overcoming a number of practical problems such as the formation of biphasic mixtures in solvent blends due to undesired water accumulation.
| Item Type: | Journal Article |
|---|---|
| Subjects: | Q Science > QD Chemistry |
| Divisions: | Faculty of Science > Chemistry |
| Journal or Publication Title: | European Polymer Journal |
| Publisher: | Pergamon |
| ISSN: | 0014-3057 |
| Date: | November 2007 |
| Volume: | Vol.43 |
| Number: | No.11 |
| Number of Pages: | 10 |
| Page Range: | pp. 4583-4592 |
| Identification Number: | 10.1016/j.eurpolymj.2007.08.017 |
| Status: | Peer Reviewed |
| Publication Status: | Published |
| Access rights to Published version: | Restricted or Subscription Access |
| URI: | http://wrap.warwick.ac.uk/id/eprint/30859 |
Data sourced from Thomson Reuters' Web of Knowledge
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