User:James C. Schwabacher/Notebook/CHEM-571/2014/08/27

Biomaterials Design Lab

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Objective First synthesis of Polymer and Polymer + Clay films. Protocol From Dr. Hartings' Notes Polymer-Clay Films Add 7mL of water to 1g of 22,000MW polyvinyl alcohol and 0.11g of sodium montmorillonite in a glass vial Stir the solution with constant heating at 75C until the polymer is dissolved and the clay is dispersed (~15 minutes) Cool the solution to room temperature Add 0.5mL 0.8 wt% glutaraldehyde. NOTE: Perform step 4 in the hood Stir for an additional 3 minutes to ensure homogeneity Pour solution into a teflon dish to dry until the next class Polymer Films Add 7mL of water to 1g of 22,000MW polyvinyl alcohol in a glass vial Stir the solution with constant heating at 75C until the polymer is dissolved (~15 minutes) Cool the solution to room temperature Add 0.5mL 0.8 wt% glutaraldehyde. NOTE: Perform step 4 in the hood Stir for an additional 3 minutes to ensure homogeneity Pour solution into a teflon dish to dry until the next class Notes Actual amounts of reactants 1.0024 g PVOH for polymer film 1.0010 g PVOH + 0.1103 clay for polymer clay + film After 10 minutes of heating at 75 degrees Celsius the temperature was raised to 120 to facilitate dissolving.