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    Effect of end-group modification on the adsorption of poly(ethylene oxide)-b-poly(butylene oxide) diblock copolymers at the solid–liquid interface

    Year: 2010

    Journal: Polymer Bulletin, Volume 65, Number 5, 521-531, 20101201

    Authors: Siddiq M., Liu G., Zhang G., Khan A., Budd P.M.

    Last authors: Peter M. Budd

    Organizations: Department of Chemistry, Quaid-I-Azam University, Islamabad, Pakistan Hefei National Laboratory for Physicsl Sciences at Microscale, Department of Chemical Physics, University of Science and Technology of China, Hefei, Anhui, China School of Chemistry, University of Manchester, Manchester, UK

    Country: UK, United Kingdom

    The adsorption of poly(ethylene oxide)-b-poly(butylene oxide) diblock copolymers at the solid–liquid interface was studied using a quartz crystal microbalance with dissipation monitoring (QCM-D). The effect of modifying the end group of the hydrophilic block was investigated by comparing the behaviour of trimethylammonium- and dimethylamino-tipped copolymers, designated as TE m B n and DE m B n , respectively. For adsorption from aqueous solution onto a gold surface, results for DE49B22 were similar to those of the T-analogue, but for DE80B34 adsorbed amounts were substantially higher, and for DE27B25 enormously higher, than for the T-analogue. It is suggested that very high levels of adsorption are associated with the formation of a multilayer structure.