Adsorption Mechanism(s) of Poly(Ethylene Oxide) on Oxide Surfaces

Journal of Colloid and Interface Science
S Mathur, B M Moudgil

Abstract

Adsorption of poly(ethylene oxide) (PEO) on various oxides and the flocculation behavior of PEO-coated particles was investigated to elucidate the polymer adsorption mechanism(s). It was determined that strong Bronsted acid sites on the surface interact with the ether oxygen of PEO, a Lewis base, to induce adsorption and subsequent flocculation of the substrate particles. In general highly acidic oxides of the type MO3, M2O5, and MO2 are expected to adsorb and flocculate with PEO. Accordingly, MoO3, V2O5, and SiO2 were found to strongly adsorb PEO and exhibit flocculation. On the other hand, no significant adsorption was observed on oxides with a point of zero charge (pzc) greater than that of silica such as TiO2, Fe2O3, Al2O3- and MgO thereby indicating specificity of PEO-surface bonding site interactions. The other possible mechanisms of PEO adsorption such as complexation with adsorbed ions and electrostatic interactions with a positively charged surface were found not to play a major role in the PEO adsorption onto oxide particles. In this investigation, the adsorption and flocculation behavior of oxides with PEO and the underlying adsorption mechanism(s) are discussed. Copyright 1997 Academic Press. Copyright 1997Academic ...Continue Reading

Citations

Aug 22, 2018·Proceedings of the National Academy of Sciences of the United States of America·Camila A Saez CabezasDelia J Milliron
Apr 26, 2013·Science and Technology of Advanced Materials·Bertrand FaureLennart Bergström
May 13, 2014·Soft Matter·Laura ZulianBarbara Ruzicka
Feb 5, 2021·Soft Matter·Katie A RoseRussell J Composto
Jan 26, 2010·Langmuir : the ACS Journal of Surfaces and Colloids·Naa Larteokor McFarlaneMatthew L Lynch
Apr 22, 2008·Langmuir : the ACS Journal of Surfaces and Colloids·Geoffrey OlanyaPer M Claesson
Apr 21, 2009·Langmuir : the ACS Journal of Surfaces and Colloids·M Reza NejadnikHenk J Busscher
Aug 6, 2010·Langmuir : the ACS Journal of Surfaces and Colloids·Naa Larteokor McFarlaneMatthew L Lynch
Aug 10, 2021·Journal of Liposome Research·Philipp GradKatarina Edwards
Aug 7, 2013·Langmuir : the ACS Journal of Surfaces and Colloids·Xiaoling WeiTo Ngai
Jan 29, 2013·ACS Nano·Nikhil J FernandesEmmanuel P Giannelis
Mar 9, 2019·Langmuir : the ACS Journal of Surfaces and Colloids·Bernard P Binks, Hui Shi
Oct 23, 2012·Langmuir : the ACS Journal of Surfaces and Colloids·Biswajit Sarkar, Paschalis Alexandridis
Dec 28, 2005·Langmuir : the ACS Journal of Surfaces and Colloids·Kristen E BremmellHans J Griesser
Jul 27, 2005·Langmuir : the ACS Journal of Surfaces and Colloids·Wibke HellmichAlexandra Ros
Oct 12, 2021·Soft Matter·Karin El RifaiiPatrick Davidson

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