Journal•ISSN: 1359-0294
Current Opinion in Colloid and Interface Science
Elsevier BV
About: Current Opinion in Colloid and Interface Science is an academic journal published by Elsevier BV. The journal publishes majorly in the area(s): Microemulsion & Wetting. It has an ISSN identifier of 1359-0294. Over the lifetime, 1657 publications have been published receiving 126490 citations. The journal is also known as: Current opinion in colloid and interface science.
Topics: Microemulsion, Wetting, Micelle, Polyelectrolyte, Particle
Papers published on a yearly basis
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TL;DR: In this paper, the authors compare the behavior observed in systems containing either particles or surfactant molecules in the areas of adsorption to interfaces, partitioning between phases and solid-stabilised emulsions and foams.
Abstract: Colloidal particles act in many ways like surfactant molecules, particularly if adsorbed to a fluid–fluid interface. Just as the water or oil-liking tendency of a surfactant is quantified in terms of the hydrophile–lipophile balance (HLB) number, so can that of a spherical particle be described in terms of its wettability via contact angle. Important differences exist, however, between the two types of surface-active material, due in part to the fact that particles are strongly held at interfaces. This review attempts to correlate the behaviour observed in systems containing either particles or surfactant molecules in the areas of adsorption to interfaces, partitioning between phases and solid-stabilised emulsions and foams.
3,202 citations
TL;DR: Electrospinning is a process by which polymer nanofibers (with diameter lower than 100 nm and lengths up to kilometres) can be produced using an electrostatically driven jet of polymer solution (or polymer melt) as mentioned in this paper.
Abstract: Electrospinning is a process by which polymer nanofibers (with diameter lower than 100 nm and lengths up to kilometres) can be produced using an electrostatically driven jet of polymer solution (or polymer melt). Simple alignment of electrospun nanofibers constructs unique functional nanostructures such as nanotubes and nanowires. Significant progress has been made in this area throughout the past few years and this technology has been exploited to a wide range of applications. Most of the recent work on electrospinning has focused either on trying to understand deeper the fundamental aspects of the process in order to gain control of nanofiber morphology, structure, surface functionality, and strategies for assembling them or on determining appropriate conditions for electrospinning of various polymers and biopolymers.
1,250 citations
TL;DR: In this article, experimental studies of wetting phenomena have helped to bridge the gap between the progress made in theory and simulation over the past decade, and the experimental evidence or verification of the theoretical predictions.
Abstract: Recent advancements in experimental studies of wetting phenomena have helped to bridge the gap between the progress made in theory and simulation over the past decade, and the experimental evidence or verification of the theoretical predictions. These developments include new measurements of the equilibrium thickness of precursor wetting films on solid and liquid substrates and at the liquid/gas interface, experimental studies of critical adsorption, as well as measurements of the dynamics of wetting and spreading and the nucleation of wetting layers in simple and complex systems. There have also been some recent results on dewetting of solid substrates by liquid films.
1,061 citations
TL;DR: The structure of the concentrated polymer phase seems to resemble a continuous polymer phase in which the protein can diffuse around, as well as the individual polysaccharide molecules, which resembles the behaviour of a (viscous) concentrated particle dispersion.
Abstract: Coacervation of proteins and anionic polysaccharides is both of practical and theoretical interest. From a large body of literature, it seems that the phase separation is mainly entropically driven, and may most probably be attributed to the delocalisation of the counter ions of the protein and the polysaccharide. The protein and polysaccharide appear to form complexes in solution, which can be viewed as new colloidal entities. These complex particles are neutral and exhibit an attractive interaction, which leads to a phase separation of the gas-liquid type in which a (very) dilute colloidal phase coexists with a very concentrated colloidal phase. In the case of strong poly-acids, usually, a precipitate is formed rather than a liquid coacervate phase. The structure of the concentrated polymer phase seems to resemble a continuous polymer phase in which the protein can diffuse around, as well as the individual polysaccharide molecules. Time scales of diffusion vary from milliseconds to days depending on the strength of the interaction. From a rheological point of view, the concentrated phase is much more viscous than elastic and the rheology resembles the behaviour of a (viscous) concentrated particle dispersion. Theoretical developments are limited probably due to the difficulty to describe the (correlated) charge distribution in the system. There is a strong interest in coacervates for the use of encapsulation. For the same reason, much attention is given to replacing the traditional gelatin by milk and plant proteins.
1,000 citations
TL;DR: In a seminal series of papers, Franz Hofmeister, Professor of Pharmacology at the University of Prague, was the first to study specific ion effects systematically as discussed by the authors, which stands in the scheme of things in importance much as did the work of Mendel to genetics.
Abstract: Specific ion effects are universal in biology, biochemistry, chemistry and chemical engineering. In a seminal series of papers, Franz Hofmeister, Professor of Pharmacology at the University of Prague was the first to study these effects systematically. His work stands in the scheme of things in importance much as did the work of Mendel to genetics. For over a hundred years Hofmeister effects have not been encompassed by theories of solution or colloid chemistry. It is only recently, the subject of this special issue, that some progress has been made. Hofmeister's work is much quoted. But practically no one has ever actually read his papers (originals in archaic German). They are model scientific works for their, and indeed for our time. This article gives translations of two of his most important contributions.
997 citations