Papers – Page 20 – TechConnect Briefs

Chitosan-Nanoparticle as UV Filter and Carrier for Cosmetic Actives

Wanichwecharungruang S.P., Assoc. Prof., TH

Chitosan derivative was prepared by grafting both phthaloyl groups and methoxy poly(ethylene glycol) moieties onto the polymer chain. Nanoparticles of the prepared chitosan derivative were then obtained through solvent displacement technique. The products are stable [...]

Organic-Inorganic Hybrid Sun Blocking Powders Based on Polysilsesquioxane

Kim Y.B., Yoon K-S, PaiChai University, KR

Trialkoxyorganosilanes containing p-methoxybenzoyl group were sybthesized and polymerized in shapes of spheres. The resulting spherical powder had narrow size distributions and showed promising characteristics as organic-inorganic hybrid UV blocking agents. Regardless of the sizes of [...]

Preparation and characterization of release behavior for hydrophilic drug loaded alginate nanohydrogels

Lee H.Y., Lee S.M., Lee H.Y., Lee S.M., Kim M.K., Kim Y.M., Kim M.K., Kim Y.M., Sohn S-O, Ghim H-D, Kyungpook National University, KR

Recently, there have been considerable interests in developing biodegradable nanoparticles as effective drug delivery devices. Alginate is one of the hydrophilic natural polymers having biodegradability and biocompatibility. It has possibility to apply in the controlled [...]

Production of Stable Drug Nanospensions Using Microfluidics Reaction Technology

Panagiotou T., Mesite S., Fisher R., Gruverman I., Microfluidics Corporation, US

This paper discusses the advantages to producing aqueous hydrophobic drug nanosuspensions with Microfluidics Reaction Technology.

A Novel Detection of Early Colorectal Cancer by Chitosan Nanoparticles Conjugated with Folic Acid

Yang S.J., Lin F.H., Tsai K-C, Shieh M.J., Institute of Biomedical Engineering, National Taiwan University, TW

The 5-Aminolevulinic acid (5-ALA) can be converted into protoporphyrin IX (PpIX) that can be utilized as a fluorescent probe for tumor detection. In this study, folic acid was conjugated on chitosan molecules via covalent bond [...]

Fluorescence of Water-Soluble Fullerenes in Biological Systems

Lin S., Jones D.X., Mount A.S., Ke P.C., Clemson University, US

The chemical and photophysical properties of fullerenes have been studied over the past two decades yet the biological applications of these nanoparticles remain limited. The major hurdle of integrating fullerenes with biological systems is their [...]

Nanoscale Maghemite Iron Oxide Powders Prepared by Laser Pyrolysis

Morjan I., Dumitrache F., Alexandrescu R., Birjega R., Voicu I., Gavrila L., Soare I., Filotti G., Kuncser V., Ciupina V., National Institute for Lasers, Plasma and Radiation Physics, RO

Nano-sized maghemite particles (usually less than 15 nm diameter) have been directly synthesized by the laser induced pyrolysis of iron pentacarbonyl vapors. Ethylene was used as sensitizer of the induced reaction. By the controlled use [...]

Grinding and Dispersion Equipment For Nano Scale Applications

Way H., NETZSCH Fine Particle Technology, LLC, US

This paper will address the material science of reducing particles to nano size, highlighting some of the machines and processes that achieve that result. One notable innovation that will be discussed is an inline disperser [...]

Characterization and Synthesis of Platinum Nanoparticles for the Electrochemical Oxygen Reduction Reaction

Elizondo-Villarreal N., Rodríguez Ramírez F., Gochi-Ponce Y., Alonso Núñez G., José Yacamán M., University of Texas, Austin, US

Metallic nanoparticles are of great interest because of the modification of properties observed due to size effects, modifying the catalytic, electronic, and optical properties of the monometallic nanoparticles.The polyol method has been reported to produce [...]

Ceramic foams directly-coated with flame-made V2O5/TiO2

Schimmoeller B., Schulz H., Pratsinis S.E., Bareiss A., Reitzmann A., Kraushaar-Czanetzki B., Swiss Federal Institute of Technology (ETH Zürich ), CH

Flame-made airborne V2O5/TiO2 nanoparticles were deposited directly onto mullite foam supports making ready-to-use catalysts for the o-xylene conversion to phthalic anhydride. These particles containing 10 wt.% V2O5 were made by combustion of liquid precursor sprays [...]