Development of Functionalized Poly(ε-caprolactone)/Hydroxyapatite Scaffolds via Electrospinning 3D for Enhanced Bone Regeneration.

Functionalized scaffolds based on biodegradable polymers are materials used in bone tissue engineering. This study presents the development of functionalized fibrous scaffolds, fabricated from poly(ε-caprolactone) (PCL) and hydroxyapatite (HA). To produce this material, a short-distance electrospinning (ES) system was developed by adapting a 3D printer.

Polypyrrole-coated electrospun polystyrene films as humidity sensors.

We report the preparation of flexible polystyrene/polypyrrole (PS/PPy) mats and their successful use as a resistive humidity sensor. These composite membranes were prepared by first obtaining PS films through the electrospinning technique, and then incorporating PPy chains by an in situ chemical polymerization of the pyrrole monomer. The PS fibers were homogeneously distributed, with diameters that obeyed a normal distribution with an average value of (1.

Use of magnetic polyaniline/maghemite nanocomposite for DNA retrieval from aqueous solutions.

We demonstrated that the magnetic polyaniline/maghemite nanocomposite (Pani/γ-Fe2O3 MNC) is an efficient agent for retrieval of pure double stranded deoxyribonucleic acid (dsDNA) chains from aqueous solutions. The dsDNA chains used in the retrieval experiments were of sodium salt of Salmon Sperm DNA. Based on λ=260 nm absorption measurements, we have employed UV-Vis spectroscopy to estimate the concentration of DNA present in solutions, before and after the interaction with the MNC.