Filtration on a sieve of aqueous suspensions of fibers and solid particles. 2. Influence of interparticle electrostatic interactions on the retention of particles by fibers

1986 ◽  
Vol 25 (1) ◽  
pp. 118-123
Author(s):  
Michel Nardin ◽  
Jacques Schultz ◽  
Eugene Papirer
Keyword(s):  
Electrostatic Interactions ◽  
Solid Particles ◽  
Aqueous Suspensions

Contribution of Surface Charge to Bovine Serum Albumin Adsorption on Hydroxyapatite Ceramic Particles

2007 ◽  
Vol 330-332 ◽  
pp. 861-864 ◽  
Author(s):  
Xiang Dong Zhu ◽  
Hong Song Fan ◽  
X. N. Chen ◽  
Dong Xiao Li ◽  
Xing Dong Zhang
Keyword(s):  
Bovine Serum Albumin ◽  
Serum Albumin ◽  
Surface Charge ◽  
Bovine Serum ◽  
Electrostatic Interactions ◽  
Solid Particles ◽  
Hydroxyapatite Ceramic ◽  
Liquid Environment ◽  
Zeta Potentials ◽  
Albumin Adsorption

Protein adsorption is driven by various interactions. The contribution of surface charge to bovine serum albumin (BSA) adsorption on hydroxyapatite (HA) ceramic was investigated by adjusting the liquid environment in which the solid particles dispersed. Zeta potentials of HA and the adsorption of BSA on the surface were tested as a function of pH, ionic strength, Ca2+ and PO4 3- concentrations in the aqueous solutions, and the results showed that both of them were greatly affected by those experimental variations. Besides, the amount of adsorbed BSA was related to the variation of zeta potential of HA, as could be well understood in terms of electrostatic interactions.

Measurements by MRI of the settling and packing of solid particles from aqueous suspensions

AIChE Journal ◽  
2009 ◽  
Vol 55 (6) ◽  
pp. 1426-1433 ◽  
Author(s):  
Julio Acosta-Cabronero ◽  
Laurance D. Hall
Keyword(s):  
Solid Particles ◽  
Aqueous Suspensions

Aqueous Suspensions of Natural Swelling Clay Minerals. 1. Structure and Electrostatic Interactions

Langmuir ◽  
2011 ◽  
Vol 27 (9) ◽  
pp. 5562-5573 ◽  
Author(s):  
Erwan Paineau ◽  
Isabelle Bihannic ◽  
Christophe Baravian ◽  
Adrian-Marie Philippe ◽  
Patrick Davidson ◽  
...  
Keyword(s):  
Clay Minerals ◽  
Electrostatic Interactions ◽  
Swelling Clay ◽  
Aqueous Suspensions ◽  
Swelling Clay Minerals

scholarly journals Linalool Essential Oil/Nanocellulose-Based Pickering Emulsions: An In-Depth Investigation of Processing Parameters

2021 ◽  
Author(s):  
Alana Gabrieli de Souza ◽  
Jéssica de Souza Marciano ◽  
Rafaela Reis Ferreira ◽  
Eder Ramin de Oliveira ◽  
Derval dos Santos Rosa
Keyword(s):  
Essential Oil ◽  
Electrostatic Interactions ◽  
Processing Parameters ◽  
Solid Particles ◽  
Pickering Emulsions ◽  
Optimum Parameters ◽  
Maximum Stability ◽  
Oil Concentration ◽  
And Storage ◽  
Ideal Process

Abstract This study aims to prepare nanocellulose-based emulsions using linalool essential oil using different processing parameters and correlating them with emulsions' stability and particle size. The investigated parameters were cellulose morphology (CNC or CNF) and concentration (0.5 or 1 wt%), essential oil concentration (20 or 30% v/v), homogenization speed (10,000 or 12,000 rpm), and time (3 or 7 minutes). The emulsions were tested by droplet size, morphology, and storage stability. The Design of Experiments (DoE) was used to understand each parameter's effects in the emulsions' characteristics and the statistical results. Each nanocellulose morphology presented a type of stabilization in emulsions and different ideal process parameters. CNC-emulsions showed as optimum parameters 30% essential oil and 7 minutes preparation, reflecting the higher necessary energy for the efficient CNCs adsorption in the O/W interface, and the maximum stability was ~ 50% by electrostatic interactions. CNF-emulsions showed optimum parameters 1% CNF and 12,000 rpm homogenization speed, reflecting the necessary parameters to convert the suspensions into gels where the droplets are well-coated by the fibers. This study is a pioneer in an in-depth understanding of the processing parameters' impact on emulsion stability and will be a guideline for future studies with different solid particles and oil phases.

Template mediated crystal engineering

1994 ◽  
Vol 52 ◽  
pp. 480-481
Author(s):  
Brigid R. Heywood ◽  
S. Champ
Keyword(s):  
Crystal Engineering ◽  
Electrostatic Interactions ◽  
Alkyl Chain ◽  
Crystallographic Axis ◽  
Two Dimensional ◽  
Engineering Process ◽  
Solution Interface ◽  
Extensive Program ◽  
Geometric Homology ◽  
Long Alkyl Chain

Recent work on the crystallisation of inorganic crystals under compressed monomolecular surfactant films has shown that two dimensional templates can be used to promote the oriented nucleation of solids. When a suitable long alkyl chain surfactant is cast on the crystallisation media a monodispersied population of crystals forms exclusively at the monolayer/solution interface. Each crystal is aligned with a specific crystallographic axis perpendicular to the plane of the monolayer suggesting that nucleation is facilitated by recognition events between the nascent inorganic solid and the organic template.For example, monolayers of the long alkyl chain surfactant, stearic acid will promote the oriented nucleation of the calcium carbonate polymorph, calcite, on the (100) face, whereas compressed monolayers of n-eicosyl sulphate will induce calcite nucleation on the (001) face, (Figure 1 & 2). An extensive program of research has confirmed the general principle that molecular recognition events at the interface (including electrostatic interactions, geometric homology, stereochemical complementarity) can be used to promote the crystal engineering process.

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