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

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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
  1. The PVA with (1-hexadecyl) triphenylphosphonium bromide film from Eleni's group looked homogeneous, with a light brown color.
  2. 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.




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