BREEN, C., RAWSON, J. O., MANN, B. E. and ASTON, M. (1998). In situ Cs-133 and H-1 solution-phase NMR, thermoanalytical and X-ray diffraction studies of the adsorption of polyalkyleneglycol on Texas bentonite. Colloids and Surfaces A Physicochemical and Engineering Aspects, 132 (1), 17-30.
Full text not available from this repository.Abstract
The isotherms for the adsorption of a polyalkylene glycol (PAG1), of molecular weight <1000, onto Na+-, K+-, Cs+- and Mn2+-exchanged Texas bentonite are all of low affinity and the amount adsorbed increased in the sequence Cs<Na<Mn. X-ray diffraction studies showed that all exchange forms, except Cs, adsorbed two layers of PAG1 and the thermal stability of the PAG1/clay complexes paralleled the amount adsorbed. Washing the complexes once with water reduced the amount adsorbed by 50% and removed a layer of PAG1 from the interlamellar region, thus reducing the d-spacing to 14.5 Angstrom. Cs-133 NMR of clay suspensions, containing 2.5 wt.% bentonite, confirmed that PAG1 alone could not displace the resident Cs+-ions from the clay nor did the PAG1 interfere with the displacement of Cs+-ions by low molecular weight polycation. H-1 NMR shows PAG1 was incapable of displacing hydration-shell water molecules from the Mn2+-ions occupying the exchange sites on the clay. (C) 1998 Elsevier Science B.V.
Item Type: | Article |
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Research Institute, Centre or Group - Does NOT include content added after October 2018: | Materials and Engineering Research Institute > Advanced Coatings and Composites Research Centre > Polymers, Composites and Spectroscopy Group |
Identification Number: | https://doi.org/10.1016/S0927-7757(97)00153-2 |
Page Range: | 17-30 |
Depositing User: | Jill Hazard |
Date Deposited: | 13 May 2010 08:58 |
Last Modified: | 18 Mar 2021 21:15 |
URI: | https://shura.shu.ac.uk/id/eprint/1851 |
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