Effect of polycarboxylate ether comb-type polymer on viscosity and interfacial properties of kaolinite clay suspensions

Zhang, Ling; Lu, Qingye; Xu, Zhenghe; Liu, Qingxia; Zeng, Hongbo

doi:10.1016/j.jcis.2012.04.029

Cited by 58 publications

(20 citation statements)

References 51 publications

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“…This (most probably) indicates that the introduced polymer is captured by the clay minerals with at least some of its side chains being trapped into clay layers, so that its dispersing efficiency is lost. This sorption of extremely large amount of PCEs has been well described in literature for the clay mineral types present in the studied material (smectite) [45,46,47,48]. No saturation of the clay particles is observed which could suggest that at a higher dosage PCEs could be active as dispersants.…”

Section: Resultssupporting

confidence: 79%

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Lime as an Anti-Plasticizer for Self-Compacting Clay Concrete

et al. 2016

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This paper focuses on the modification of clay properties with inorganic additives to deflocculate and flocculate inorganic soil for the development of a material that would be as easy to use as the current concrete products, but with a much lower environmental impact. Considering that the rheological behaviour of clays is controlled by their surface charge, we first introduce potential determining ions to deflocculate the clay particles and to reduce the yield stress of the earth material. Their efficiency is characterized using zeta potential measurements and rheological tests. We then achieve the flocculation of clay particles by using natural minerals that slowly dissolve in the interstitial liquid and ultimately precipitate calcium silicate hydrate (C–S–H). The precipitation products are identified by X-ray diffraction and the consequences of this delayed precipitation are followed by oscillatory rheometric measurements. Finally, it is suggested that in this process, C–S–H precipitation is not used as a binding vector but as an anti-plasticizer that removes the inorganic dispersant additives.

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Section: Resultssupporting

confidence: 79%

“…As no effect is observed with clay particles, we can suppose that the side chains of PCEs are “trapped” between the aluminosilicate layers of smectite, leading to a large polymer consumption but no dispersion. This phenomenon is well known [45,46,47,48] and will be confirmed with TOC and ζ-potential measurement in the next section.…”

Section: Resultssupporting

confidence: 78%

Lime as an Anti-Plasticizer for Self-Compacting Clay Concrete

et al. 2016

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“…More detailed description of using SFA and AFM can be found elsewhere

F = k x

A number of studies on the interactions between particles and polymer flocculants with SFA and AFM are available . For example, Wang et al .…”

Section: Performance Assessment Of Flocculantsmentioning

confidence: 99%

Water Soluble Polymer Flocculants: Synthesis, Characterization, and Performance Assessment

Vajihinejad

Gumfekar

Bazoubandi

et al. 2018

Macro Materials & Eng

141

108

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Water soluble polymer flocculants are important constituents of solid–liquid separation units for the treatment of a variety of process‐affected effluents. The systematic development of a flocculant relies on a good understanding of flocculation process, polymer synthesis, polymer characterization, and, not the least, flocculation performance assessment as desired for a particular treatment process, all of which are essential to establish meaningful relationships between flocculant microstructure and flocculation efficiency. The aim of this article is to communicate the bigger picture of this research area to the readers. The recent advances in the application of bio/natural, synthetic, and stimuli‐responsive flocculants are reviewed. Then, the basic polymer reaction engineering tools to control the microstructure of flocculants are provided and the techniques for the quantification of flocculant microstructure are concisely discussed. This is followed by a review of the methods used for the characterization of particle‐polymer force measurement, and flocculation/dewatering assessment with attention to the characterization of aggregate structures.

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“…This is thought to occur mainly because the clay minerals in the fine limestone particles absorb water, and because the high performance AE water-reducing agent is adsorbed on the clay minerals. The effect of clay minerals on the adsorption and dispersion mechanisms of comb-type superplasticizers has been investigated (Atarashi et al 2003;Ng et al 2012;Zhang et al 2012). The influence of clay minerals on fluidity has been determined quantitatively; when superplasticizers interact with the clay minerals, their fluidity can be reduced significantly (Atarashi et al 2004b;Sakai et al 2006).…”

Section: Introductionmentioning

confidence: 99%

Interaction between Montmorillonite and Chemical Admixture

Atarashi

Yamada

Itoh

et al. 2015

ACT

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The effect of montmorillonite on the hydration reactions and fluidity of cement paste was investigated using comb-type superplasticizer or sodium gluconate. When comb-type superplasticizer was added, montmorillonite affected the retardation action of the initial hydration reaction in the cement and the dispersion significantly. When sodium gluconate was added, the effect of the montmorillonite on the retardation action was smaller compared with that of the comb-type superplasticizer. The amount of comb-type superplasticizer adsorbed on the cement particles is reduced significantly by the addition of montmorillonite. In the case of sodium gluconate, the amount adsorbed on the cement particles is also decreased by the addition of montmorillonite. However the adsorbed amount of sodium gluconate on montmorillonite is smaller compared with that of superplasticizer on montmorillonite.

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Effect of polycarboxylate ether comb-type polymer on viscosity and interfacial properties of kaolinite clay suspensions

Cited by 58 publications

References 51 publications

Lime as an Anti-Plasticizer for Self-Compacting Clay Concrete

Lime as an Anti-Plasticizer for Self-Compacting Clay Concrete

Water Soluble Polymer Flocculants: Synthesis, Characterization, and Performance Assessment

Interaction between Montmorillonite and Chemical Admixture

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