Advanced Materials for Engineering Applications – Page 69

Formation and Coatings of Fine Particles in Jets of Supercritical Fluids

Gokhale A., Shen Y., Khusid B., Dave R., Pfeffer R., New Jersey Institute of Technology, US

Recently published studies of the formation of polymer particles in supercritical carbon dioxide are limited to the use of good organic solvents or their mixtures and relatively wide nozzles. In contrast, we use the new [...]

Paclitaxel Conjugate Block Copolymer Nanoparticle Formation by Flash NanoPrecipitation

Saad W.S., Mayer L., Princeton University, US

Nanoparticle formulations of drugs, printing inks, sun screens, and other hydrophobic organic compounds have distinct advantages in bioavailability, color intensity, and aesthetics. Common requirements of these applications are control of particle size and surface functionality. [...]

Nano-structuring of isotactic polypropylene in presence of a self-assembling nucleating agent under defined flow conditions

Balzano L., Rastogi S., Peters G., Technical University Eindhoven, NL

Presence of additives in polymers plays an important role in physical and mechanical properties. For an example DMDBS is one of the frequently used additives in polypropylenes. The additive is used to achieve higher transparency [...]

Electrochemical Synthesis of Polyaniline Nanoparticles and Nanofibers

Xavier M.G., Leite E.R., Leite F.L., Leite E.R., Leite F.L., Venancio E.C., MacDiarmid A.G., Mattoso L.H.C., ARS-USDA, US

It is known that the properties of polymers produced by the electrodeposition of aniline is strongly dependent on the experimental conditions used. In these electrochemical methods two main steps can occur, the (1) nucleation process [...]

Polymer Nanofibers from Multiple Jets Produced on a Porous Surface by Electrospinning

Dosunmu O.O., Chase G.G., Varabhas J.S., Kataphinan W., Reneker D.H., Microscale Physiochemical Engineering Center, US

Electrospinning involves the uniaxial stretching of a viscoelastic jet derived from a polymer solution or melt. The stretching is because of a very high voltage applied to the polymer solution (or melt) relative to a [...]

Production of Conducting Polymer Nanowires for Use as Intravascular Neural Recording Electrodes

Ruddy B., Watanabe H., Hunter I., Llinás R.R., Massachusetts Institute of Technology, US

A crucial factor limiting the adoption of brain-machine interfaces is the invasiveness of conventional microelectrode arrays. Recently, Llinas et al. proposed a new, less invasive form of microelectrode array, utilizing sub-micrometer insulated platinum wires placed [...]

Industrial Applications of Nano-Track Etched Templates and Films

Hanot H., Ferain E., Legras R., it4ip, BE

It4ip is a supplier of state-of the-art research and Hi-Tech products based on the combination of ion-track technology of polymers with template capability to make high value added nano-objects, nano-structures and smart membranes.rnrnThe range of [...]

Amphiphilic Self-assembled Nanoparticles Composed of Chitosan and Ursolic Acid for Protein Delivery on the Skin

Lee S.B., Cho K., Shim J.K., Korea Institute of Industrial Technology, KR

Several promising studies have been reported for the protein delivery such as cytokines using nano-sized particles, which have detrimental effect on the loading the protein without localization and releasing it without deactivation. To design the [...]

Physico-chemical Structure of Multilayer Polyion Complexes Comprising PolyHyrdoxylAmine & Genomie DNA

Harper G., WetaScience, UK

Alternating multilayers of DNA and polyhydroxylamine [PT] were produced on cationic microbeads [C]. DNA elution on two enclosed layers and a surface layer of DNA, provided 10µg DNA/mg bead/ per layer and yield 54µg/mg bead. [...]

Dyeing and Fastness Properties of Acid Dyeable Polypropylene Nanocomposite

Dar Y.S., Fan Q., Ugbolue S.C., Wilson A.R., Yang Y., University of Massachusetts Dartmouth, US

We reported that the dyeability of PP can be improved by mixing nanoclay with the PP matrix. In this paper, we further investigated the PP nanocomposites acid dyeability using three distinct chemical structures, namely, anthraquinone, [...]