Polylactic acid (PLA)/starch fibers were produced by twin screw extrusion of PLA with granular or gelatinized starch/glycerol followed by drawing through a set of winders with an intermediate oven. At 30% starch, fibers drawn 2–5x were highly flexible (elongation 20–100%) while undrawn filaments were brittle (elongation 2–9%). Tensile strength and moduli increased with increasing draw ratio but...

Polylactic acid (PLA) was melt-blended with epoxy resin to study the effects of reaction on mechanical and thermal properties PLA. The addition 0.5% (wt/wt) PLA increased maximum tensile strength (57.5 MPa) 67 MPa, whereas 20% improved elongation at break 12%, due crosslinking caused by reaction. morphology PLA/epoxy blends showed nanoparticle dispersion in matrix that presented a smooth fractu...

objective(s): in this study, drug loaded electrospun nanofibrous mats were prepared and drug release and mechanism from prepared nanofibers were investigated.  materials and methods: paclitaxel (ptx) loaded polylactic acid (pla) nanofibers were prepared by electrospinning. the effects of process parameters, such as ptx concentration, tip to collector distance, voltage, temperature and flow rate...

STATEMENT OF THE PROBLEM Recently allogenic mesenchymal stem cells are proposed to have multipotential progenitor cell capabilities to differentiate into cementoblasts, osteoblasts, and periodontal ligament fibroblasts. PURPOSE The aim of the present study was to compare the efficacy of human umbilical stem cells cultured on polylactic acid (PLA), polyglycolic acid (PGA) membrane with PLA/PGA...

Abstract The ratio of poly(lactic acid) (PLA), poly(butylene adipate- co -terephthalate) (PBAT), and calcium carbonate (CaCO 3 ) fillers in PLA/PBAT/CaCO composites was set at 90/10/5, 70/30/5, 30/70/5. effect nano- micro-CaCO on the melting crystallization performance investigated by differential scanning calorimetry. PLA related to PBAT ratio, cooling rate, CaCO particle size composites. Nano...

Abstract The design of the cylindrical Luneburg lens manufactured by using 3D printing facilities was presented, fabricated and experimentally verified. two different approaches to parameter discretization were applied compared. effective dielectric permittivity Polylactic Acid (PLA) plastic samples with infilling percentage estimated a resonant method.

BACKGROUND The demand for lactic acid has been increasing considerably because of its use as a monomer for the synthesis of polylactic acid (PLA), which is a promising and environment-friendly alternative to plastics derived from petrochemicals. Optically pure L-lactic acid is essential for polymerization of PLA. The high fermentation cost of L-lactic acid is another limitation for PLA polymers...

Research and development of packaging materials and packaging technology have shown a clear and irreversible trend toward “green” and active packaging. Recent studies on packaging materials have emphasized the use of biobased materials in conjunction with nanotechnology. Hence, in present study we explored a concept of using bionanohybrids and their composites with biobased polymer for active p...