User:Tamanika Tinsley/Notebook/Chem 581 Biomaterials Design Lab/2015/02/04

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Feb 4- Coatings and DSC Objectives Put the aluminum plate in the oven on temperature 85C for two hours Increase temperature to 135C for two more hours Repeat the synthesis from Friday, 30th of January, 2015 Start a new synthesis, without the titanium dioxide Analyze DSC Data TiO2/Epoxy Film Synthesis measure 3.03450 and 3.04546 g of JD-400 add 5.52087 and 5.86469 g of the epoxy add 0.84646 and 0.86432 g of TiO2 let stir for 5 minutes with temperature of 85C reduce the temperature to 60C for another 10 minutes. transport the mixture into an aluminum dish Let it sit in room temperature till next lab section. Epoxy without TiO2 present Synthesis measure 3.03840, and 3.07631 g of JD-400 add 5.53123 and 5.65516 g of the epoxy let stir for 5 minutes with temperature of 85C reduce the temperature to 60C for another 10 minutes. transport the mixture into an aluminum dish Let it sit in room temperature till next lab section. DSC Results Figure 1. DSC results for Ti)2 coating before curing. The Differential Scanning Calorimetry (DSC)analysis gave us the following information Curing for TiO2 coatings begins at 66.51 degrees Celsius, the upper limit was 74.53 and the lower limit was 58.49 degrees Celsius The maximum curing temperature was at 120 degrees Celsius The system takes an average of 196.45 J/g of energy, the upper limit was 201.6 and the lower limit was 191.3