User:Rachel Gill/Notebook/Chem 681 2018/2018/11/07

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Biomaterials Design Lab Main project page Previous entry      Next entry Objective Make PVA beads and set up dye uptake for Malachite Green. Lab Protocol Malachite Green Uptake 100 mg of beads 5 g MG (concentrations of 0.5, 1.00, 1.53, 3, 8.88, 15.3, and 25.3 ppm) incubate for one week UV-Vis to analyze change in concentration of MG solution Data MG uptake for PVA/clay sample 1: beads 0.10135 g, 0.5 ppm MG 5.16608 g sample 2: beads 0.10506 g, 1.00 ppm MG 4.99864 g sample 3: beads 0.10540 g, 1.53 ppm MG 5.02237 g sample 4: beads 0.10402 g, 3 ppm MG 5.01150 g sample 5: beads 0.10247 g, 8.88 ppm MG 5.03009 g sample 6: beads 0.09905 g, 15.3 ppm MG 5.02960 g sample 7: beads 0.10782 g, 25.3 ppm MG 5.23447 g MG uptake for PVA/clay Second Sample Set sample 1b: beads 0.10205 g, 0.5 ppm MG 5.07035 g sample 2b: beads 0.10874 g, 1.00 ppm MG 5.07701 g sample 3b: beads 0.11161 g, 1.53 ppm MG 5.08247 g sample 4b: beads 0.10001 g, 3 ppm MG 5.11842 g sample 5b: beads 0.10398 g, 8.88 ppm MG 5.11321 g sample 6b: beads 0.10367 g, 15.3 ppm MG 5.12320 g sample 7b: beads 0.10402 g, 25.3 ppm MG 5.02527 g DSC Analysis: Glass Transition point of PVA in degrees C PVA_JB : 75.88 PVA_AJRL: 75.28 PVA_JN: 76.81 PVA_RL: 78.07 PVA/clay beads were potentially too cross-linked, no real glass transition was able to be seen. Notes