COMPETITIVE ADSORPTION OF POLYMER AND PLASTICIZER INTO THE
'It is difficult to quantify the amount of plasticizer and biopolymer that resides itr or outside the clay gallery, but their quantification is very important as the polymer-plasticizer...
COMPETITIVE ADSORPTION OF POLYMER AND PLASTICIZER INTO THE
COMPETITIVE ADSORPTION OF POLYMER AND PLASTICIZER INTO THE CLAY GALLERY June 2010 Francis Clegg Caitlin Breen Khairuddin Khairuddin New bio-based packaging materials are of growing interest due...
Polymer-layered silicate nanocomposites: an overview
An overview of polymer–clay hybrid nanocomposites is provided with emphasis placed on the use of alkylammonium exchanged smectite clays as the reinforcement phase in selected polymer matrices. A few weight percent loading of organoclay in nylon 6 boosts the heat distortion temperature by 80°C, making possible structural applications under
Molecular insight into competitive adsorption of methane and
This result provides implication that the CS-EGR efficiency can be potentially improved by increasing the water content in clay. This study gains deep insights into the CO 2 /CH 4 competitive adsorption mechanism in montmorillonite clay at microscopic scale, and can open new potentials for tuning the application of CS-EGR in clay-rich shale gas
Adsorption of plasticizers – Influence of plasticizer and
of the plasticizer in the newly formed ettringite: Since delayed addition of the polymer is not followed by a further considerable hydration of the cement (dormant period), the renewal of the surfaces active in adsorption does not occur in this case and, therefore, the amount of polymer consumed is much lower than that
- Do terpolymers interact with clay?
- XRD experiments suggest that the newly synthesized terpolymers undergo only weak interaction with clay, opposite to conventional PCE products. When a larger quantity of esterified macromonomer was used during the synthesis, more carboxyl groups will be introduced to the PCE backbone, which led to the smaller the adsorption amount of PCE on Mmt.
- Does superplasticizer adsorption capacity affect the dispersibility of cement paste?
- Plank et al. found a correlation between the dispersibility of superplasticizer and its adsorption capacity, which higher adsorption amount leads to better dispersibility of cement paste. The adsorption of PCE on cement particle can be evaluated using the zeta potential.
- How to improve the clay tolerance performance of PCE terpolymer?
- Based on the molecular structure design, the clay tolerance performance of PCE can be achieved by adjusting the length and morphology of PCE side chains, and introducing functional groups. Lei et al. synthesized a short side chain terpolymer using 4-hydroxybutyl vinyl ether (HEVE) as a functional monomer.
- Can SAE-PCEs containing carboxyl terminal group adsorb on clay particles?
- Schematic illustration of the adsorption of SAE-PCEs containing carboxyl terminal group on clay particles. Polycarboxylate superplasticizers (PCE) with terminal carboxyl groups have been synthesized successfully from free radical copolymerization reactions. Synthesized PCEs were characterized by FT-IR and H NMR spectroscopy.
- Does Mg 2+ adsorb on clay mineral edge surfaces?
- Our experimental results could not be explained without a specific adsorption mechanism for Mg 2+ on the clay mineral edge surfaces, and this hypothesis was supported by successful data modeling.
- Can adsorption data overestimate the retention properties of clay mineral phases?
- A direct consequence of this conclusion is that the adsorption data obtained on pure clay mineral phases, and the models that have been built using these data may overestimate the retention properties of these clay mineral phases when applied to natural environments.
