Papers – Page 24 – TechConnect Briefs

Microstructure and Stability of Polymer Nanocomposite

Yin J., Wang X., Fan Y., Lin J., Lei Q., Harbin University of Science and Technology, CN

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 2050 m. The microstructure and nanoparticle distribution in [...]

Thermoplastic polyurethane nanocomposites: effect of organoclay structure and hard segment concentration on morphology and properties

Chavarria F., Paul D.R., The University of Texas at Austin and Texas Materials Institute, US

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 [...]

Novel Biphasic Hydrogels for Controlled Drug Delivery

Parvathy V., University of Queensland, AU

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 [...]

Nanoscopic Tunning via Hydrophilic and Hydrophobic Macro-RAFT

Parvathy V., Univeristy of Queensland, AU

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 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 [...]

Molecular orientation in electrospun poly(butylene terephthalate) nanofibers

Catalani L.H., Collins G., Jaffe M., University of Sao Paulo, BR

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 [...]

Synthesis and Self-assembling Properties of Functionalized Glycolipids

Wang G., Nie X., Cheuk S., Williams K., University of New Orleans, US

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 [...]

Dissolution of Hydrogen Bonded Polymers in Water: From Synthetic to Biopolymers

Rastogi S., Vinken E., Harings J., Yin J., Terry A., Eindhoven University of Technology, NL

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 [...]

Polymer-based gene delivery system fabricated with the participation of a polyanion

Sun Q., Stolnik S., University of Nottingham, UK

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 [...]

Glycosaminoglycan model glass substrates and cancer cell interactions

Peramo A., Wright G., Meads M.B., Dalton W.S., Matthews G., University of South Florida, US

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 [...]