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Advances in Colloid and Interface Science

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https://www.readbyqxmd.com/read/30396508/solid-liquid-liquid-wettability-and-its-prediction-with-surface-free-energy-models
#1
REVIEW
A Stammitti-Scarpone, E J Acosta
Understanding wettability in solid-liquid-liquid (SLL or immersed) systems is important for numerous applications. However, predicting SLL wetting behavior on smooth surfaces has received little attention. The objective of this work was to explore alternatives to predict SLL wettability. To this end, we first present a review of solid surface free energy (σS ) data obtained from solid-liquid-air (SLA) contact angle (θL a ) data and a summary of available SLL contact angle data for selected materials. Next, the existing surface free energy models for SLA systems are discussed in terms of their applicability to predict wettability of SLL systems...
October 25, 2018: Advances in Colloid and Interface Science
https://www.readbyqxmd.com/read/30396507/reverse-engineering-the-ultrasound-contrast-agent
#2
REVIEW
Mark A Borden, Kang-Ho Song
In this review, a brief history and current state-of-the-art is given to stimulate the rational design of new microbubbles through the reverse engineering of current ultrasound contrast agents (UCAs). It is shown that an effective microbubble should be biocompatible, echogenic and stable. Physical mechanisms and engineering calculations have been provided to illustrate these properties and how they can be achieved. The reverse-engineering design paradigm is applied to study current FDA-approved and commercially available UCAs...
October 24, 2018: Advances in Colloid and Interface Science
https://www.readbyqxmd.com/read/30342700/a-critical-review-of-the-model-fitting-quality-and-parameter-stability-of-equilibrium-adsorption-models
#3
REVIEW
Mengsu Peng, Anh V Nguyen, Jianlong Wang, Reinhard Miller
We reviewed eight commonly used equilibrium adsorption models and examined their underlying assumptions, fitting qualities, and parameter stabilities. We compared several objective functions that have been applied to curve fitting analysis and a few statistics tests that have been performed to evaluate regression quality. The iteratively reweighted least squares algorithm was selected as the most suitable regression method for adsorption models in the presence of heteroscedasticity. The fraction of unexplained variance was selected to indicate the model fitting quality...
October 7, 2018: Advances in Colloid and Interface Science
https://www.readbyqxmd.com/read/30376953/physico-chemistry-from-initial-bacterial-adhesion-to-surface-programmed-biofilm-growth
#4
REVIEW
Vera Carniello, Brandon W Peterson, Henny C van der Mei, Henk J Busscher
Biofilm formation is initiated by adhesion of individual bacteria to a surface. However, surface adhesion alone is not sufficient to form the complex community architecture of a biofilm. Surface-sensing creates bacterial awareness of their adhering state on the surface and is essential to initiate the phenotypic and genotypic changes that characterize the transition from initial bacterial adhesion to a biofilm. Physico-chemistry has been frequently applied to explain initial bacterial adhesion phenomena, including bacterial mass transport, role of substratum surface properties in initial adhesion and the transition from reversible to irreversible adhesion...
November 2018: Advances in Colloid and Interface Science
https://www.readbyqxmd.com/read/30318342/graphene-inks-for-printed-flexible-electronics-graphene-dispersions-ink-formulations-printing-techniques-and-applications
#5
REVIEW
Tuan Sang Tran, Naba Kumar Dutta, Namita Roy Choudhury
Graphene inks have recently enabled the dramatic improvement of printed flexible electronics due to their low cost, ease of processability, higher conductivity and flexibility. In this review, we discuss the state-of-the-art of the fundamental formulation of graphene inks and the current printing techniques used for inks deposition, followed by recent practical applications for printed flexible electronics. The progression of science and technology for the dispersion of graphene using variety of solvents and the characteristics of the resulting conductive inks have been highlighted, with specific emphasis focused on the challenges to be resolved...
November 2018: Advances in Colloid and Interface Science
https://www.readbyqxmd.com/read/30301519/mechanistic-insight-into-protein-supported-biosorption-complemented-by-kinetic-and-thermodynamics-perspectives
#6
REVIEW
M A Khosa, Aman Ullah
In this review, we discussed the micro-level aspects of protein supported biosorption. The mechanism, surface chemistry in terms of energy interactions and electron transfer process (ETP) of peptide systems within protein are three important areas that provide mechanistic insight into protein supported biosorption. The functional groups in proteinous material like hydroxyl (-OH), carbonyl (>C=O), carboxyl (-COOH) and sulfhydryl (-SH) play a significant role in the biosorption of variety of pollutants such as metal ions, metalloids, and organic matters in wastewaters...
November 2018: Advances in Colloid and Interface Science
https://www.readbyqxmd.com/read/30293697/new-developments-in-liquid-liquid-extraction-surface-modification-and-agglomerate-free-processing-of-inorganic-particles
#7
REVIEW
R M E Silva, R Poon, J Milne, A Syed, I Zhitomirsky
This review describes new methods for the particle extraction through liquid-liquid interface (PELLI). The discovery of new surface modification techniques, advanced extractors and new adsorption mechanisms enabled novel applications of PELLI in nanotechnology of metals, quantum dots, oxides and hydroxides. Colloidal and interface chemistry of PELLI is emerging as a new area of technological and scientific interest. The progress achieved in the understanding of particle behavior and interactions at the liquid-liquid interface, phase transfer and interface reactions allowed for the development of new extraction mechanisms...
November 2018: Advances in Colloid and Interface Science
https://www.readbyqxmd.com/read/30262128/recent-progress-in-the-engineering-of-multifunctional-colloidal-nanoparticles-for-enhanced-photodynamic-therapy-and-bioimaging
#8
REVIEW
Łukasz Lamch, Agata Pucek, Julita Kulbacka, Michał Chudy, Elżbieta Jastrzębska, Katarzyna Tokarska, Magdalena Bułka, Zbigniew Brzózka, Kazimiera A Wilk
This up-to-date review summarizes the design and current fabrication strategies that have been employed in the area of mono- and multifunctional colloidal nanoparticles - nanocarriers well suited for photodynamic therapy (PDT) and diagnostic purposes. Rationally engineered photosensitizer (PS)-loaded nanoparticles may be achieved via either noncovalent (i.e., self-aggregation, interfacial deposition, interfacial polymerization, or core-shell entrapment along with physical adsorption) or covalent (chemical immobilization or conjugation) processes...
November 2018: Advances in Colloid and Interface Science
https://www.readbyqxmd.com/read/30243667/surface-modified-halloysite-nanotubes-a-flexible-interface-for-biological-environmental-and-catalytic-applications
#9
REVIEW
Maithri Tharmavaram, Gaurav Pandey, Deepak Rawtani
Halloysite Nanotubes (HNTs) are clay minerals that possess unique chemical composition and a tubular structure due to which, they have recently emerged as a potential nanomaterial for umpteen applications. Over the years, the myriad applications of HNT have been realized through the surface modification of HNT, which involves the modification of nanotube's inner lumen and the outer surface with different functional compounds. The presence of aluminum and silica groups on the inner and outer surface of HNT enhance the interfacial relationship of the nanotube with different functional agents...
November 2018: Advances in Colloid and Interface Science
https://www.readbyqxmd.com/read/30243666/binary-colloidal-crystals-bccs-interactions-fabrication-and-applications
#10
REVIEW
Farhana Sharmin Diba, Andrew Boden, Helmut Thissen, Mrinal Bhave, Peter Kingshott, Peng-Yuan Wang
The organization of matter into hierarchical structures is a fundamental characteristic of functional materials and living organisms. Binary colloidal crystal (BCC) systems present a diversified range of nanotopographic structures where large and small colloidal particles simultaneously self-assemble into either 2D monolayer or 3D hierarchical crystal lattices. More importantly, understanding how BCCs form opens up the possibility to fabricate more complex systems such as ternary or quaternary colloidal crystals...
November 2018: Advances in Colloid and Interface Science
https://www.readbyqxmd.com/read/30195460/modelling-cavitation-during-drop-impact-on-solid-surfaces
#11
REVIEW
Nikolaos Kyriazis, Phoevos Koukouvinis, Manolis Gavaises
The impact of liquid droplets on solid surfaces at conditions inducing cavitation inside their volume has rarely been addressed in the literature. A review is conducted on relevant studies, aiming to highlight the differences from non-cavitating impact cases. Focus is placed on the numerical models suitable for the simulation of droplet impact at such conditions. Further insight is given from the development of a purpose-built compressible two-phase flow solver that incorporates a phase-change model suitable for cavitation formation and collapse; thermodynamic closure is based on a barotropic Equation of State (EoS) representing the density and speed of sound of the co-existing liquid, gas and vapour phases as well as liquid-vapour mixture...
October 2018: Advances in Colloid and Interface Science
https://www.readbyqxmd.com/read/30177215/lipid-nanocarriers-for-the-loading-of-polyphenols-a-comprehensive-review
#12
REVIEW
S Pimentel-Moral, M C Teixeira, A R Fernandes, D Arráez-Román, A Martínez-Férez, A Segura-Carretero, E B Souto
Polyphenols are secondary metabolites found in all vascular plants and constitute a large group of at least 10,000 unique compounds. Particular attention is currently being paid to polyphenols attributed to their beneficial effects in the protection and prevention of several diseases. While their use in food, pharmaceutical and cosmetic industries is largely documented, several environmental conditions (e.g. light, temperature or oxygen) may affect the physicochemical stability of polyphenols, compromising their bioactivity in vivo...
October 2018: Advances in Colloid and Interface Science
https://www.readbyqxmd.com/read/30177214/recent-and-prominent-examples-of-nano-and-microarchitectures-as-hemoglobin-based-oxygen-carriers
#13
REVIEW
Michelle M T Jansman, Leticia Hosta-Rigau
Blood transfusions, which usually consist in the administration of isolated red blood cells (RBCs), are crucial in traumatic injuries, pre-surgical conditions and anemias. Although RBCs transfusion from donors is a safe procedure, donor RBCs can only be stored for a maximum of 42 days under refrigerated conditions and, therefore, stockpiles of RBCs for use in acute disasters do not exist. With a worldwide shortage of donor blood that is expected to increase over time, the creation of oxygen-carriers with long storage life and compatibility without typing and cross-matching, persists as one of the foremost important challenges in biomedicine...
October 2018: Advances in Colloid and Interface Science
https://www.readbyqxmd.com/read/30170690/mechanisms-performance-optimization-and-new-developments-in-demulsification-processes-for-oil-and-gas-applications
#14
REVIEW
Zlata Grenoble, Siwar Trabelsi
The present review discusses new developments and optimization of demulsification processes in oil and gas applications, and highlights the critical parameters. Discussed are the primary mechanisms of demulsification, as well as the strategies for developing optimum demulsifiers. Demulsification mechanisms are presented in the context of emulsion stability principles which are equally applicable to the destabilization of crude oil-water emulsions. The present paper is a concise overview of the various surfactant classes and their structure-activity relationship...
October 2018: Advances in Colloid and Interface Science
https://www.readbyqxmd.com/read/30170689/recent-advances-in-polymerizations-in-dispersed-media
#15
REVIEW
Ratchapol Jenjob, Farzad Seidi, Daniel Crespy
Advances in chemistry heterophase polymerizations reflect new developments in polymer chemistry. Although some few polymerization reactions cannot be performed in dispersed media, new polymerization reactions can still benefit from advantages of heterophase reactions, which are fast kinetics due to high local concentration of reagents and advantageous heat exchange. We describe here advances in heterophase polymerizations, with a focus on miniemulsion polymerization, which are mainly driven by academic interest for biomedicine and energy science...
October 2018: Advances in Colloid and Interface Science
https://www.readbyqxmd.com/read/30119842/engineering-intelligent-particle-lipid-composites-that-control-lipase-mediated-digestion
#16
REVIEW
Paul Joyce, Hanna Gustafsson, Clive A Prestidge
Nanostructured particle-lipid composites have emerged as state-of-the-art carrier systems for poorly water-soluble bioactive molecules due to their ability to control and enhance the lipase-mediated hydrolysis of encapsulated triglycerides, leading to a subsequent improvement in the solubilisation and absorption of encapsulated species. The first generation of particle-lipid composites (i.e. silica-lipid hybrid (SLH) microparticles) were designed and fabricated by spray drying a silica nanoparticle-stabilised Pickering emulsion, to create a novel three-dimensional architecture, whereby lipid droplets were encapsulated within a porous matrix support...
October 2018: Advances in Colloid and Interface Science
https://www.readbyqxmd.com/read/30060946/evaluation-of-particle-charging-in-non-aqueous-suspensions
#17
REVIEW
Jarl B Rosenholm
Factors influencing the sign and size of effective surface (zeta) potential in suspensions of very low dielectric constants are evaluated. For non-aqueous suspensions it was found that Gutmann's donor number (DN = negative Lewis type molar acid-base adduct formation enthalpy) was successfully related to zeta potential changes, similarly as pH is optimal for aqueous suspensions. Negative molar proton dissociation enthalpy (Brϕnsted type HD number), negative hydrogen bond enthalpy (HB number), logarithmic hydrogen bond equilibrium constant (molar Gibbs free energy), standard reduction potential of solvated protons (Eo (HL + /H2 )), electrolytic dissociation potential of water (Eo (H2 O/H2 ,O2 )) and electron exchange Fermi potentials could equally well be related to zeta potential changes...
September 2018: Advances in Colloid and Interface Science
https://www.readbyqxmd.com/read/30056938/orientation-phase-transitions-of-undissociated-n-decanoic-acid-at-the-air-solution-interface-revealed-by-surface-pressure-and-electric-potential
#18
REVIEW
Wanda Barzyk, Klaus Lunkenheimer, Andrzej Pomianowski
The surface pressure (Π) and electric surface potential (ΔV) vs. concentration (c) isotherms of n-decanoic acid (DA) in 1 × 10-3  mol/dm3 HCl were measured at the air/solution interface - the Π with a du Noüy ring, the ΔV with the vibrating plate (named also the dynamic condenser) method. The DA solutions fulfilled criterion of surface-chemical purity. The complementary Π-c and ΔV-c isotherms were jointly evaluated to obtain dependence of quotient of the effective dipole moment to the interface's permittivity, μ⊥ /εs , as a function of chosen adsorption ordinates such as the bulk concentration, c, partial molar area, A, and surface molar fraction of DA, XDA s ...
September 2018: Advances in Colloid and Interface Science
https://www.readbyqxmd.com/read/30032930/nitrogen-doped-graphene-and-graphene-quantum-dots-a-review-onsynthesis-and-applications-in-energy-sensors-and-environment
#19
REVIEW
Manpreet Kaur, Manmeet Kaur, Virender K Sharma
Doping of nitrogen is a promising strategy to modulate chemical, electronic, and structural functionalities of graphene (G)and graphene quantum dots (GQDs) for their outstanding properties in energy and environmental applications.This paper reviews various synthesis approaches of nitrogen-doped graphene (N-G) and nitrogen-doped graphene quantum dots (N-GQDs).;Thermal, ultrasonic, solvothermal, hydrothermal, and electron-beam methods have been applied to synthesize N-G and N-GQDs.These nitrogen-doped carbon materials are characterized to obtain their structural configurations in order to achieve better performance in their applications compared to only either graphene or graphene quantum dots...
September 2018: Advances in Colloid and Interface Science
https://www.readbyqxmd.com/read/30075852/developments-in-support-materials-for-immobilization-of-oxidoreductases-a-comprehensive-review
#20
REVIEW
Jakub Zdarta, Anne S Meyer, Teofil Jesionowski, Manuel Pinelo
Bioremediation, a biologically mediated transformation or degradation of persistent chemicals into nonhazardous or less-hazardous substances, has been recognized as a key strategy to control levels of pollutants in water and soils. The use of enzymes, notably oxidoreductases such as laccases, tyrosinases, various oxygenases, aromatic dioxygenases, and different peroxidases (all of EC class 1) is receiving significant research attention in this regard. It should be stated that immobilization is emphasized as a powerful tool for enhancement of enzyme activity and stability as well as for protection of the enzyme proteins against negative effects of harsh reaction conditions...
August 2018: Advances in Colloid and Interface Science
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