Emulsion and Ultrasonication in the Nanoencapsulation of Ibuprophen Coated with Polyblend of Poly(lactic Acid) and Poly (ε-Caprolactone)

Polyblend of poly(lactic acid) (PLA) and poly(ε-caprolactone)(PCL) as coating of ibuprophen has been prepared. The encapsulation of ibuprophen in this study was carried out by emulsification and ultrasonication technique. The PLA used was synthesized with an average molecule weight (Mv) 9463 g/mol. Nanocapsules obtained were ranged between 480 to 950 nm. The optimum sonication time in the formation of nanocapsules was 60 minute. The efficiency and the size of nanocapsules increased with the increasing of sonication time. The nanocapsules efficiency at sonication time 30, 45, and 60 minutes were 4.514, 9.724, and 5.987 % respectively

Mechanical and Barrier Properties of PVP-Carbon Dot Nanocomposite Films

This research reported carbon dot were synthesized form citric acid and urea through a single step microwave process and Poly Vinyl Pirrolidone (PVP) films composited by carbon dot were prepared. The effects of different composition carbon dots on mechanical strength of films and water vapour barrier were evaluated. Highest mechanical yielded composite film were analyzed their thermal stability. Average of carbon dot diameter was found 90.61 nm and polydispersity indice 0.396. Different composition carbon dot exhibit significant improvement in tensile strength and modulus. Water permeablity of films varieate with content of carbon dot. The presence of carbon dot had a negligible effect on Tg of film and show melting process