Dispersion research trends

The two factors governing the activity of electrode materials, the surface area and the electronic structure, inspired the present trends in research for more efficient electrocatalysts. Thus, in order to maximize the surface area, materials are more and more dispersed so as to increase the surface-to-volume... 

In this special volume on polymer particles, recent trends and developments in the synthesis of nano- to micron-sized polymer particles by radical polymerization of vinyl monomers in environmentally friendly heterogeneous aqueous and supercritical carbon dioxide fluid media are reviewed by prominent worldwide researchers. Polymer particles are prepared extensively as synthetic emulsions and latexes, which are applied as binders in the industrial fields of paint, paper and inks, and films such as adhesives and coating materials. Considerable attention has recently been directed towards aqueous dispersed systems due to the increased awareness of environmental issues. Moreover, such polymer particles have already been applied to more advanced fields such as bio-, information, and electronic technologies. In addition to the obvious commercial importance of these techniques, it is of fundamental scientific interest to completely elucidate the mechanistic details of macromolecule synthesis in the microreactors that the polymer particles in these heterogeneous systems constitute. 

Because PLA is highly brittle, it has been blended with numerous polymers to improve its toughness. A by-product of this research was the observation that some blends, in fact, showed SM feature. Lai and Lan [61] studied the SM performance of PLA/thermoplastic PU blends at 70/30 and 50/50 compositions. Thermoplastic PU was found in dispersed form at 70/30 ratio, while a bicontinuous phase structure was concluded for the PLA/PU = 50/50. After deforming the specimens at = 25,80, and 120 °C, the recovery was assessed in the temperature range T = 20-160°C. Note that the selected data are below and above that of the of the PLA (about 80 °C). Rf, 7 , and the recovery stress strongly depended on and recovery temperatures. Rf increased with increasing while an opposite trend was observed for R. ... 

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