#Pickering emulsion disc particles free#

Tavacoli (Université Paris-Sud, France), Job H. ( 3), where soft armoured latexes added to waterborne adhesives induce a marked increase in tack adhesion energy.īicontinuous Emulsions Stabilised by Colloidal ParticlesĬhapter 6 by Joe W. The outlook on technological application of armoured nanocomposite polymer latexes is promising, although still in its infancy: the latter developments in the synthesis techniques will allow more applied studies and a potential application has recently been reported by Wang et al. An extensive historical overview of the field is provided with several examples, followed by a mechanistic insight on the process, although work on the area is still limited. The difference, in the case of Pickering emulsions, is the replacement of surfactants with solid, often nanosized particles: clay disks, amphiphilic polymer Janus particles, and silica NPs.

#Pickering emulsion disc particles free#

The final part of the chapter concentrates on Pickering emulsion polymerisation: general references are suggested for further reading, and then a standard recipe for a free radical emulsion polymerisation is presented. A successful synthesis needs particles that are able to adhere and cover the emulsion droplet, thus curvature is crucial and constraints on the size of particles are present: typically the particles need to be less than 200 nm in diameter, unless flexibility and bending around the droplet are possible. More examples of using Laponite disks as stabilisers are given. Pickering mini-emulsion polymerisation was first reported in the literature by Landfester et al. Examples of suspension polymerisations include using titanium dioxide, Laponite particles and iron oxide with different polymers and formulating inverse Pickering suspension polymerisation systems. The opening paragraph explains the peculiarities of each system, followed by historical perspective and the more recent developments in suspension polymerisation, such as preparing deliberately armoured composite polymer particles. The terminology used in Chapter 4 by Stefan Bon is quite technical and confusion is likely for those who are unfamiliar with these topics. Pickering Suspension, Mini-Emulsion and Emulsion Polymerisation AuNP-stabilised emulsions are used as templates to fabricate hollow hybrid capsules.įinally, the stabilisation of emulsions by Janus disks is summarised, with examples that include preparing amphiphilic Janus Laponite disks at the oil-water interface ( Figure 1) and using metal-supporting Janus particles as interfacial catalysts.

Interesting NP complexes with core-shell structures are made from AuNPs and iron oxide NPs with PS brushes. Next the topic of AuNPs, functionalised with polymer brushes to stabilise emulsions, is highlighted. Then clay layers with homopolymer brushes are presented finally examples of mixed homopolymer brushes and hydrophilic faces with hydrophobic polystyrene (PS) brushes on the edges are introduced. First clay layers with block copolymer brushes are discussed: examples of preparations with poly(dimethylaminoethyl methacrylate) (PDMAEMA) and poly(methyl methacrylate) (PMMA) block copolymers are given. Brushes are generally sought after for their responsiveness to environmental conditions. The chapter has been written by Hanying Zhao and Jia Tian (Nankai University, China). Pair interactions are discussed not only from a theoretical viewpoint, but also by illustrating direct measurements done with optical laser tweezers and then related to bulk property measurements further experiments reviewed include the effect of additives (salt and surfactant) and the evolution of interactions with time.Ĭhapter 3 is nearly entirely dedicated to applications of polymer brush-modified clay layers or gold nanoparticles (AuNPs) in Pickering emulsions. Furst (University of Delaware, USA), is a more extensive description of the physical-chemical interactions of particles adsorbed at fluid-fluid interfaces: from the wettability of a single particle, homogeneous or amphiphilic, to more complex topics, such as the interactions between pairs of homogeneous and amphiphilic particles, with a focus on effects of geometrical anisotropy and non-spherical objects. The following chapter, authored by Bum Jun Park (Kyung Hee University, South Korea), Daeyeon Lee (University of Pennsylvania, USA) and Eric M. The first chapter is written by Stefan Bon and it is a very short and basic introduction to the Pickering stabilisation phenomenon, with a brief historical perspective.