Aggregation and solubilization of organic solvents and petrol/gasoline in water mediated by block copolymers
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 0014-3057Full text not available from this repository.
Official URL: http://dx.doi.org/10.1016/j.eurpolymj.2007.08.017
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|
|Official Date:||November 2007|
|Number of Pages:||10|
|Page Range:||pp. 4583-4592|
|Access rights to Published version:||Restricted or Subscription Access|
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