User:Andrew K Farag/Notebook/CHEM-581/2014/08/27

Biomaterials Design Lab

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Objective Starting synthesis for both polymer and polymer-clay films Description Starting material was prepared by Dr. Hartings according to his lab notebook. Perform the following procedures (1 and 2) in parallel for the start to the synthesis of cross-linked polymer and cross-linked polymer-clay films. Polymer-Clay Films Add 7mL of water to 1.0041 g 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 1.0030 g 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 Polymer-Clay film was yellow and transparent. Actual mass of sodium montmorillonite used was 0.1100g. Actual mass of polyvinyl alcohol (PVA) used was 1.0041g. Polymer film was colorless and transparent. Actual mass of polyvinyl alcohol (PVA) used was 1.0030g.