Friday, May 11, 2012

Week 6


Figure 1: Thinner Well Plate Design


Figure 2: Electrospinning Demonstration

During the past week, the group needed to make changes to specific design decisions and began trials for the new electrospinner. The design of the well-plate was determined to be in need of efficiency maximization. Some problems realized were that it was too thick and that the second wire hole was not necessary since the wire is not particularly malleable. It is in the process of being updated to cut out unnecessary materials. A PEO solution of 300 mL, 600,000 molecular weight and 5 weight % was obtained to electrospin. During lab, the group spun 3 samples, 1 at each geared motor speed. The set up included the use of a power supply, the polymer solution, and the new electrospinner. The power supply was kept at 13 kV, the electrospinner held a constant distance of 14 cm from the base to the aluminum foil sheet, and the electrospinner was run for 20 minutes in each trial. Figure 1 shows the new changes to the well-plate design, and Figure 2 shows a demonstration of the electrospinner.