User:Michael S. Bible/Notebook/581/2014/09/26

Biomaterials Design Lab

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Objective Create duplicate films from the ion exchanged clays Finish processing the clays from 9/24/2014 Completing film synthesis The ion exchanged clays were processed using the procedure from 8/29/2014 Warm 150mL of Sodium Sulfate Solution (see below for details) at 80C for 15 minutes Place film in Sodium Sulfate Solution (see below for details) at 80C for 1 hour with gentle stirring Warm 150mL of 1% HCl at 80C for 15 minutes Place film in 1% HCl Solution (see below for details) at 80C for 30 minutes with gentle stirring Place film in Sodium Bicarbonate Solution for 15 minutes at room temperature with gentle stirring The PVA with (1-hexadecyl) triphenylphosphonium bromide film from Eleni's group looked homogeneous, with a light brown color. Below is a picture of the PVA with tributylhexadecylphosphonium bromide made by my group Creating New Films Our cation exchanged clays were made as follows: PVA + tributylhexadecylphosphonium bromide exchanged clay Mass of PVA = 1.00245g Mass of tributylhexadecylphosphonium bromide = .1104g Volume of Water = 7.0 mL PVA + (1-hexadecyl)triphenylphosphonium bromide exchanged clay Mass of PVA = 1.00453g Mass of (1-hexadecyl)triphenylphosphonium bromide = 0.1126g Volume of water = 7.0 mL Note: Because film created using the tributylhexadecylphosphonium bromide exchanged-clay had flakes of the clay clumped throughout the films, today I ground our exchanged-clay into a finer powder using a mortar and pestle for use in today's film synthesis.