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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

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Abstract

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.

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Acknowledgements

We are grateful to Dr. Carin Tattershall (University of Manchester) for synthesis of the dimethylamino- and trimethylammonium-tipped diblock copolymers and to Wayne Harrison (University of Manchester) for synthesis of other poly(ethylene oxide)-b-poly(butylene oxide) diblock copolymers. Abbas Khan wishes to acknowledge the Higher Education commission for a fellowship under the indigenous PhD scholarship program. M. Siddiq is thankful to the Third World Academy of Sciences for a 2 month fellowship to work in the Department of Chemical Physics, University of Science and Technology, Hefei, China.

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Authors and Affiliations

  1. Department of Chemistry, Quaid-I-Azam University, Islamabad, Pakistan

    Mohammad Siddiq & Abbas Khan

  2. Hefei National Laboratory for Physical Sciences at Microscale, Department of Chemical Physics, University of Science and Technology of China, Hefei, Anhui, China

    Guangming Liu & Guangzhao Zhang

  3. School of Chemistry, University of Manchester, Manchester, UK

    Peter M. Budd

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  1. Mohammad Siddiq
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  2. Guangming Liu
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  3. Guangzhao Zhang
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  4. Abbas Khan
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  5. Peter M. Budd
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Correspondence to Mohammad Siddiq.

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Siddiq, M., Liu, G., Zhang, G. et al. Effect of end-group modification on the adsorption of poly(ethylene oxide)-b-poly(butylene oxide) diblock copolymers at the solid–liquid interface. Polym. Bull. 65, 521–531 (2010). https://doi.org/10.1007/s00289-010-0303-0

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