User:Sarah Burkhard/Notebook/CHEM 481 Polymers/2016/11/04

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Entry title Swelling of beads using vacuum filtration UV Vis 40 % clean, 50 % beads ICP 60 ppm clean Beads preparation procedure: make bentonite solution: at least 100 ml HCl : at least 75 mL concentrated HCL (double check) use Dominque's table. heat until dissolved (75 C) while stirring for 45 minutes. add 5 ml dropwise to 30 ml ethylacetate stirring at 320 rpm. after last drop, wait 3 minutes and add 0.5 ml glutaraldehyde. stir at 340 rpm for 7 minutes. add sodium bicarbonate. stir for 30 seconds at 340 rpm. add glutaraldehyde and stir for 3 minutes.