SAXS – TechConnect Briefs

Chitosan-based nanomaterials for drug delivery and antibiotic-free bacterial control

Vila-Sanjurjo C., Fuenzalida J.P., Menchicchi B., Coelho D., Engwer C., Hoffman S., Pereira S., Remuñán-López C., Alonso M.J., Vidal A., Moerschbacher B., Kollenbrock S., Fetzner S., Philipp B., Goycoolea F.M., Westfaelische Wilhelms Universitaet - Muenster, DE

Research focused on chitosan (CS)-based nanostructured materials has burgeoned in the past decade or so, particularly in the biosciences and bionanotechnology fields. Chitosan characteristics (Mw and degree of acetylation), as well as the processing conditions [...]

Formation mechanism of copper-silver metal nanoparticle encapsulated in carbon shell

Kang H.Y., Wang H.P., Huang C.H., Tsai C.K., National Cheng Kung University, TW

The formation mechanism of nanosize copper-silver encapsulated in the inert carbon shell (CuAg@C) has been studied by in-situ small angle X-ray scattering (SAXS) spectroscopy. SAXS is a very useful method in studies of electron density [...]

Size distribution determination of nanoparticles and nanosized pores by small-angle X-Ray scattering on a multi-purpose X-ray diffractometer platform

Bolze J., Rekhi S., Macchiarola K., Litteer B., PANalytical B.V., NL

We present the small-angle X-ray scattering (SAXS) technique for the investigation of crystalline and amorphous materials on a mesoscopic length scale ranging from ca. 1 - 100 nm. Dry powders or dispersions of inorganic and [...]

Nanoparticle Formation in Supercritical Fluids – The World’s First Real Time In-situ Investigation

Jensen H., Bremholm M., Nielsen R.P., Joensen K.D., Chen Y-S, Almer J., Søgaard E.G., Iversen B.B., Iversen S.B., Iversen B.B., Iversen S.B., SCF-Technologies, DK

In this study the world’s first real time in-situ simultaneous small angle x-ray scattering (SAXS) and wide angle x-ray scattering (WAXS) characterization of supercritical nanoparticle formation was performed. In previous supercritical studies the reaction is [...]

Morphology and Phase Transitions in Styrene-Butadiene-Styrene Triblock Copolymer Grafted with Polyhedral Oligomeric Silsesquioxanes

Drazkowski D.B., Lee A., Michigan State University, US

Two symmetric triblock copolymers of polystyrene-butadiene-polystyrene (SBS) with different styrene content were grafted with varying amounts of polyhedral oligomeric silsesquioxane (POSS) molecules with either isobutyl or phenyl moiety. The POSS octamers, R’R7Si8O12 were designed to [...]

Dicationic gemini surfactant gene delivery complexes contain cubic-lamellar mixed polymorphic phase

Foldvari M., Wettig S., Badea I., Verrall R., Bagonluri M., University of Saskatchewan, CA

The characterization of structural properties of novel dicationic (gemini) surfactant-based DNA complexes as micro/nano-scale self-assembling delivery systems for cutaneous gene therapy is described and discussed as related to measured transfection efficiencies. Previous small-angle x-ray scattering [...]