Personal & Home Care, Food & Agriculture – Page 20

Atomic Force/Scanning Probe Microscopy of Pharmaceutical and Biological Materials

Chernoff D.A., Advanced Surface Microscopy, Inc., US

AFM is a valuable tool for a wide range of materials and device analysis. AFM images of particles and biopolymers are valued because direct visualization and measurement of individual objects complements the average measures obtained [...]

Characterizing Membrane Sorption and Diffusion with Flux Lateral Force Microscopy

Killgore J.P., Overney R.M., University of Washington, US

Bulk permeability measurements provide an incomplete descriptor of permeability when considering heterogeneous or anisotropic membranes. Localized measurements of flux allow for independent assessment of constituent contributions to total permeability. Analogous to a puck on an [...]

Scalability and Control of Electrophoretic Directed Assembly of Nanoparticles

Yilmaz C., Cha N-G, Somu S., Busnaina A., Northeastern University, US

The nanoscale directed assembly of nanoparticles has a many applications in biotechnology, energy, electronics and nanomaterials. Directed assembly of nanoparticles for biosensor devices, nanowire and interconnects are being conducted at the CHN. The nanoparticle based [...]

Controlled Co-Assembly of Iron Oxide Nanoparticles and Polymers: Towards the Generation of Highly Persistent Superparamagnetic Nanorods

Fresnais J., Berret J.-F., Frka-Petesic B., Sandre O., Perzynski R., Laboratoire Matière et Systèmes Complexes, FR

In this presentation, we give an account of the formation of colloidal and supracolloidal aggregates obtained by controlled co-assembly of 7 nm particles with copolymers.

Redispersible hybrid nanopowders: cerium oxide nanoparticle complexes with phosphonated-peg oligomers

Qi L., Sehgal A., Castaing J.-C., Fresnais J., Berret J.-F., Chapel J.-P., Rhodia/CNRS joint Institution, US

Rare earth cerium oxide (ceria) nanoparticles are stabilized using end-functional phosphonated-PEG oligomers. The complexation process and structure of the resulting hybrid core-shell singlet nanocolloids are described, characterized and modeled using light and neutron scattering data. [...]

Influence of structural forces and contact hysteresis on flow-induced aggregation and breakage of polymer nanoparticles

Moussa A.S., Ehrl L., Soos M., Lattuada M., Morbidelli M., ETH Zürich, CH

Static light scattering was used on-line to monitor the flow-induced aggregation of surfactant-free polystyrene latexes in a stirred tank. Various latexes with primary particles diameters ranging between 100 and 300 nm, different charge groups, different [...]

The Nanomechanical Testing and Characterisation of Anti-viral Nano-structured Surface Coatings

Singh I., Allan P.S., Brunel University, UK

Surface coatings of nanoparticles that possess antiviral properties have been tested by a nano scratch method for their adhesive strength to metallic and polymeric substrates. The deformed coatings were observed in an SEM and values [...]

Biopolymerization-Driven Self-Assembly of Nanofiber Air-Bridges

Pabba S., Fasciotto B.H., Yazdanapanah M.M., Dobrokhotov V.V., Cohn R.W., University of Louisville, US

Many proteins polymerize in vivo to form nanometer diameter fibers, including actin and fibrin. In this study we consider the application of filament-forming proteins to nanostructure fabrication. Specifically, protein fibers are induced to polymerize and [...]

Potential for Scaled-up Manufacture of Chitosan Nanoparticles Using the Spinning Disc Processor

Loh J.W., Lim L.Y., The University of Western Australia, AU

Spinning disc processing (SDP) is an innovative and robust continuous flow technology that has great potential for the scaled up production of nanoparticles. This study examined the feasibility of producing chitosan nanoparticles by SDP technology. [...]

Atom Transfer Radical Polymerization (ATRP) as a Tool for the Synthesis of Well-Defined Functional Polymeric Materials

Tsarevsky N.V., McCarthy P., Jakubowski W., Spanswick J., Matyjaszewski K., ATRP Solutions, Inc., US

ATRP is one of the most powerful synthetic techniques that allows the synthesis of polymeric materials with predetermined molecular weight, composition, and molecular architecture derived from substituted styrenes, (meth)acrylates, or acrylonitrile. The polymers prepared by [...]