Characterization of Polyethersulfone (PES) and Polyvinylidene Difluoride (PVDF) Resistive Membranes under In Vitro Staphylococcus aureus Challenge by Sandra Nakasone Department of Biomedical Engineering Duke University Date:_______________________ Approved: ___________________________ Bruce Klitzman, Supervisor ___________________________ William (Monty) Reichert ___________________________ Fan...

A new type of wood plastic composite, Eucalyptus/PES(Polyethersulfone) blend, was developed. It was designed to be used in LS (Laser Sintering) with reduced energy usage with cost savings. The preparation of Eucalyptus/PES blend and part sintering were under fixed processing conditions and parameters. Through mechanical testing, it was discovered that the strength of prototypes is low due to th...

      The muscle-like technology would be of enormous advantages for biomedical applications such as medical implants and human assist devices. Ionic polymer metal composites (IPMCs) are one kind of biomimetic actuators. An ionic polymer metal composite composed from an ionomer with high ion exchange capacity that packed between two thin metal layers. In the present study we focused on the prep...

The use of organogelators to template chiral and achiral polyaniline superstructures via the electrostatic interaction between anionic sulfonated polyaniline and a cationic gelator is described.

Polyethersulfone (PES) is one of the most important polymeric materials and is widely used in separation fields. PES and PES-based membranes show outstanding oxidative, thermal and hydrolytic stability as well as good mechanical and film-forming properties. PES membranes could endure many kinds of sterilized methods, including epoxy ethane gas, steam, and γ-ray. Furthermore, PES-based membranes...

A simple route to highly sulfonated hypercrosslinked polymers: low-cost and tunable heterogeneous catalysts.

Composite microfiltration polyethersulfone membranes incorporating molecularly imprinted particles (MIPs) were developed for efficient and selective adsorption of 17β-estradiol from water.

CONTEXT The common genetic variant of human LH has two mutations and an extra N-linked oligosaccharide chain, a modification expected to affect the half-life in the circulation. OBJECTIVES Our objectives were to determine the half-lives of variant and wild-type forms of LH during GnRH receptor blockade in heterozygous women and to determine the time-related changes in isoform composition. D...

The static adhesion of living L1210 cells (in serum-containing medium) to the surface of (styrene/methylmethacrylate) copolymers differing in styrene content (from 5% to 50% of styrene units) was investigated. The examination of wettability of the copolymer surfaces showed that the contact angle of water on the hydrophobic surfaces is an increasing linear function of styrene content in the copo...