Regular ArticleDesorption of Adsorbed Poly(ethylene Oxide) from Colloidal Polystyrene Particles☆
References (28)
Chem. Eng. Sci.
(1993)- et al.
J. Colloid Interface Sci.
(1984) - et al.
J. Colloid Interface Sci.
(1980) - et al.
J. Colloid Interface Sci.
(1977) - et al.
J. Chromatogr.
(1978) - et al.
J. Colloid Interface Sci.
(1983) - et al.
Polymer Latexes: Preparation, Characterization and Applications
(1992) - et al.
Macromolecules
(1986) - et al.
Macromolecules
(1987) - et al.
Macromolecules
(1989)
Macromolecules
Macromolecules
Tenside Deterg.
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Viscosity modifying agents: Key components of advanced cement-based materials with adapted rheology
2022, Cement and Concrete ResearchCitation Excerpt :The substitution of the VMA by superplasticizer occurs rapidly (i.e., within 15 min). However, it should be pointed out that the desorption of an already adsorbed polymer could be very slow process in some cases and can take hours, days or even years [115]. When the VMA is displaced by the superplasticizer, yield stress is governed by the adsorbed superplasticizer, while the residual viscosity is mainly dictated by the concentration of the VMA remaining in cement pore solution (see regime 3 in Fig. 20).
Recent advances on yield stress and elasticity of fresh cement-based materials
2019, Cement and Concrete ResearchCitation Excerpt :In some cases, the exchange could be rapid, as the desorption of a superplasticizer by sulfate [61] or sodium gluconate [66]. However, as the desorption of an already adsorbed macromolecule requires the simultaneous desorption of the anchor groups, the exchange could also be a very slow process in the order of hours, days or even years [67]. To control the outcome of competitive adsorption, several recent studies focused on the modification of the chemical structure and surface affinity of the organic admixtures [68–70].
Hydration and rheology control of concrete for digital fabrication: Potential admixtures and cement chemistry
2018, Cement and Concrete ResearchCitation Excerpt :In some cases, the exchange could be rapid and reversible, as with the desorption of a superplasticizer by sulfate [47] or sodium gluconate [46] necessary for the rapid structural build up in stage 1 (Fig. 6), for example. However, the desorption of an already adsorbed polymer could also, in some cases, be a very slow process in the order of hours, days or even years, as it requires the simultaneous desorption of the anchor groups of the macromolecule [183]. Aluminate phases, and more particularly layered structures, such as layered double hydroxides (LDHs), and clays may involve another type of disturbing interaction with some admixtures.
Adsorption of poly(ethylene oxide)-containing amphiphilic polymers on solid-liquid interfaces: Fundamentals and applications
2017, Advances in Colloid and Interface ScienceCitation Excerpt :Specifically, PEO desorption was more difficult at low surface coverages, where the homopolymer was adsorbed in a train configuration. The timescales of the desorption experiments were on the order of several days, owing to the low molecular weight of the surfactant in comparison to that of the PEO homopolymers, which take a long time to detach and diffuse away from the particle surface [230]. Short, nonionic CnEOj surfactants have been found to preferentially adsorb versus larger PEO homopolymers (between 4250 and 167,700 Da) on silica [231].
Organic admixtures and cement particles: Competitive adsorption and its macroscopic rheological consequences
2016, Cement and Concrete ResearchCitation Excerpt :By varying the concentrations of sulfates in the cement pore solution, Yamada et al. [22] showed also that PCE desorption by sulfate ions is also a rapid and reversible process. However, the desorption of an already adsorbed polymer could be in some cases a very slow process and be a matter of hours, days or even years as it requires the simultaneous desorption of the anchor groups of the macromolecule [37]. If the affinity between the displacer and the anchor group of the adsorbed polymer is similar, this could only happen at a very low statistical rate.
Small-angle neutron scattering study of particle coalescence and SDS desorption during film formation from carboxylated acrylic latices
2003, Journal of Colloid and Interface Science