Papers:
Electrohydrodynamic Patterning of Thin Polymer Film
A polymer melt sandwiched with a gap fluid between two planner electrodes can self assemble into ordered microstructures under the influence of an electric field. Motivated by the variety of patterns observed in experiments, we [...]
Self-Assembled Soft Nanomaterials from Renewable Resources
The self-assembly of low molecular weight building blocks into nanoscale molecular objects has recently attracted considerable interest in terms of the bottom-up fabrication of nanomaterials. The building blocks currently used in supramolecular chemistry are synthesized [...]
Construction of High-performance Biosensor Interface through Solvent Controlled Self-assembly of PEG grafted Polymer
Zhou C., keersmaecker K.De, Braeken D., Reekmans G., Bartic C., De Smedt H., Engelborghs Y., Borghs G., Interuniversity Microelectronics Center (IMEC), BE
The ability to control biomolecular interactions at the solid-liquid interface is essential for the development of high-performance biosensors. Conventional methods to tailor the surface properties of biosensors are based on Self-Assembled Monolayers (SAMs) and Surface [...]
Glycosaminoglycan model glass substrates and cancer cell interactions
The static adhesion of three cancer cell lines to surfaces functionalized with glycosaminoglycans was performed and the possible involvement of heparanase in this process was analyzed. Four different glycosaminoglycans (heparan sulfate, chondroitin sulfate A, chondroitin [...]
Polymer-based gene delivery system fabricated with the participation of a polyanion
A DNA/polycation/polyanion system is being designed, which is supposed to be a potentially improved system in comparison to the traditional gene delivery system (DNA/polycation system). The production of such a DNA/polycation/polyanion system is based on [...]
Dissolution of Hydrogen Bonded Polymers in Water: From Synthetic to Biopolymers
The field of supramolecular materials explores the use of intermolecular, non-covalent bonding to obtain novel self-assembled structures. Self-assembly is a method of spontaneous organisation of molecules into higher order structures ranging from the nano to [...]
Synthesis and Self-assembling Properties of Functionalized Glycolipids
Biocompatible functional small molecule hydrogelators such as carbohydrates and amino acids derivatives have potential applications in drug delivery, tissue engineering and as biocompatible materials. Polydiacetylenes exhibit a unique blue to red color transition in the [...]
Molecular orientation in electrospun poly(butylene terephthalate) nanofibers
In this work, poly(butylene terephthalate) (PBT) electrospun fibers were produced by conventional electrospinning technique. All typical parameters dependences were studied. Typical behavior was observed for all parameters. In addition, we have analyzed molecular features of [...]
Novel Nano-metal Polymeric Composites Fabricated via In-Situ Self Assembly
Vargo T.G., Koloski T.S., MacRae D.M., Lucey D.W., Zhang D., Brupbacher J.B., Integument Technologies, Inc., US
Current research in the field of nanotechnology and the fabrication of polymeric composites is often complicated by the inability to obtain well dispersed nano-particles within polymeric matrices. Current methods require that nanoparticles be protected by [...]
Nanoscopic Tunning via Hydrophilic and Hydrophobic Macro-RAFT
The motivation of this paper is to show the dependence of the morphology on the composition of the copolymers and to explore and understand the influence of morphological features in the nanoscale structure to tailor [...]
Novel Biphasic Hydrogels for Controlled Drug Delivery
The current methods of drug delivery exhibit specific problems in designing a carrier for long-term release. Our aim is to fabricate biphasic hydrogels of predetermined molecular weights as carriers for long-term drug delivery. The rate [...]
Thermoplastic polyurethane nanocomposites: effect of organoclay structure and hard segment concentration on morphology and properties
Thermoplastic polyurethane (TPU) nanocomposites were prepared by melt processing using a twin screw extruder. The effects of organoclay structure and hard segment concentration of the TPU matrix on mechanical properties and morphology of the nanocomposites [...]
Microstructure and Stability of Polymer Nanocomposite
In this paper, the inorganic nanoparticles (SiO2, Al2O3) hybrid Polyimide (PI) films are prepared by Sol-Gel. The films are yellowish and transparent and the thicknesses are about 2050 m. The microstructure and nanoparticle distribution in [...]
Dyeing and Fastness Properties of Acid Dyeable Polypropylene Nanocomposite
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, [...]
Physico-chemical Structure of Multilayer Polyion Complexes Comprising PolyHyrdoxylAmine & Genomie DNA
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. [...]
Amphiphilic Self-assembled Nanoparticles Composed of Chitosan and Ursolic Acid for Protein Delivery on the Skin
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 [...]
Production of Conducting Polymer Nanowires for Use as Intravascular Neural Recording Electrodes
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 [...]
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 [...]
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 [...]
Nano-structuring of isotactic polypropylene in presence of a self-assembling nucleating agent under defined flow conditions
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 [...]
Paclitaxel Conjugate Block Copolymer Nanoparticle Formation by Flash NanoPrecipitation
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. [...]
Formation and Coatings of Fine Particles in Jets of Supercritical Fluids
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 [...]
Nanostructures fabrication via self-assembly of hybrid block copolymer/nanoparticles in thin film
Fabrication of Nanostructures via self-assembly process is an elegant concept for the production the next generation of miniaturised devices. However, many challenges need to be overcome in 2D and 3D nanofabrication before the routine utilisation [...]
Protein can act as unique template to assemble gold nanoparticles in a linear fashion
Bhattacharya R., Patra C.R., Wang S., Lu L., Yaszemski M.J., Mukhopadhyay D., Mukherjee P., Mayo Clinic, US
Nanoparticles of metals possess unique chemical, electronic, optical and magnetic properties from their bulk counterpart because of the quantum size effects. The spatial orientation and arrangement of nanoparticles is important in the realization of technologically [...]
Multifunctional Nanocomposites Made of Polypropylene Reinforced with Exfoliated Graphite Nanoplatelets (xGnP)
Polypropylene is one of the most widely used polymers. It is an attractive material because of its combination of mechanical properties, ease of processing and low cost. This research explores modification of polypropylene through addition [...]
High performance iPP based nanocomposite for food packaging application
High performance iPP based nanocomposites filled with innovative calcium carbonate nanoparticles were prepared by melt mixing. Peculiarities of the nanoparticles were the high specific surface area, the elongated shape (aragonite), and the surface modifiers (polypropylene-maleic [...]
Layered Oxide Polymer Nanocomposites: Synthesis, Characterization, and Strategies for Achieving Enhanced Barrier Property
Our research goal is to enhance the gas barrier of polymer nanocomposites using exfoliated layered materials. We have synthesized various layered oxides, ranging from layered polysilicates to perovskites, and explored novel modification techniques. Polymer films [...]
Interface-Property Relationships in Hybrid Nanocomposites from Near Net-Shape Manufacturing
Near Net-Shape Manufacturing is a two-step materials processing technique, in which nanoparticles are formed via mechanical attrition, from which nanocomposites are formed by consolidation and densification using Hot Isostatic Pressing (HIP). The technique is general [...]
Material Properties of Polymer Nanoparticle Composites for Micro Optical Applications
Nanosized ceramics, highly dispersed into polymer matrix materials, are widely being discussed for the modification of polymer properties. For applications in microsystem technology, the modification of the polymers’ optical and mechanical properties is of certain [...]
Journal: TechConnect Briefs
Volume: 2, Technical Proceedings of the 2006 NSTI Nanotechnology Conference and Trade Show, Volume 2
Published: May 7, 2006
Industry sectors: Advanced Materials & Manufacturing | Personal & Home Care, Food & Agriculture
Topics: Advanced Materials for Engineering Applications, Composite Materials
ISBN: 0-9767985-7-3