User:Alicia Rasines Mazo/Notebook/CHEM-581 Experimental Chemistry I/2014/09/10: Difference between revisions

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#* Heat of hydrate decomposition: 865.9 J/g
#* Heat of hydrate decomposition: 865.9 J/g
#* Major peaks in water:
#* Major peaks in water:
#** Minimum at 101.19ºC, other peaks at  
#** Minimum at 101.19ºC, other peaks at 104, 130ºC
#* Glass transition:
#* Glass transition:
#** Top curve inflection point: 68.59ºC
#** Top curve inflection point: 68.59ºC
Line 74: Line 74:
#* Heat of hydrate decomposition: 1044 J/g
#* Heat of hydrate decomposition: 1044 J/g
#* Major peaks in water:
#* Major peaks in water:
#** Minimum at 101.94ºC, other peaks at
#** Minimum at 101.94ºC, other peaks at 105, 108ºC
#* Glass transition:
#* Glass transition:
#** Top curve inflection point: 68.27ºC
#** Top curve inflection point: 68.27ºC
Line 82: Line 82:
#* Heat of hydrate decomposition: 1138 J/g
#* Heat of hydrate decomposition: 1138 J/g
#* Major peaks in water:
#* Major peaks in water:
#** Minimum at 103.48ºC, other peaks at  
#** Minimum at 108ºC, other peaks at 110, 131ºC
#* Glass transition:
#* Glass transition:
#** Top curve inflection point: 68.54ºC
#** Top curve inflection point: 68.54ºC

Revision as of 07:01, 17 September 2014

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Tasks for September 10

  • To complete film synthesis from September 5
  • To begin film preparation of ionic liquid modified clays
  • To analyse DSC data

Completion of Film Synthesis

Continued from Dr. Harting's procedure

  • Placed in sodium sulfate solution, followed by 1% HCl solution and finally in Sodium Bicarbonate

Film preparation of ionic liquid modified clay

  • Procedure followed as detailed by Dr. Harting
    • Added 1.12 g of of Sodium Montmorillonite (NaMT) to a scintillation vial containing 20mL of 50:50 HPLC grade water:ethanol.
    • Added 0.523 g of tributylhexadecylphosphonium bromide (THP Br) to exchange 100% of the Na from the clay.
      • 1.12 g NaMt × (92×10-3/100g NaMT)×(507.65g THP Br/mol) = 0.523 g of THP Br

DSC (Differential Scanning Calorimetry) Data

  1. PVA film in 2 ppm MG solution
    • Onset of water evaporation: 99.59ºC
    • Heat of hydrate decomposition: 830.4 J/g
    • Major peaks in water:
      • Minimum at 134.73ºC, other peaks at 101, 103 ºC
    • Glass transition:
      • Top curve inflection point: 68.99ºC
      • Bottom curve inflection point: 85.00ºC
  2. PVA film in 8 ppm MG solution
    • Onset of water evaporation: 100.91ºC
    • Heat of hydrate decomposition: 1130 J/g
    • Major peaks in water:
      • Minimum at 103.58ºC, other peaks at 107, 117 and 120ºC
    • Glass transition:
      • Top curve inflection point: 68.11ºC
      • Bottom curve inflection points: 68.94, 87.66 ºC
  3. PVA film in 80 ppm MG solution
    • Onset of water evaporation: 99.82ºC
    • Heat of hydrate decomposition: 1458 J/g
    • Major peaks in water:
      • Minimum at 110ºC, other peaks at 117 and 130.
    • Glass transition:
      • Top curve inflection point: 68.17ºC
      • Bottom curve inflection point: 68.56ºC
  4. PVA film in 200 ppm MG solution
    • Onset of water evaporation: 99.77ºC
    • Heat of hydrate decomposition: 938.2 J/g
    • Major peaks in water:
      • Minimum at 125.54ºC, other peaks at 101, 106 and 136
    • Glass transition:
      • Top curve inflection point: 68.36ºC
      • Bottom curve inflection point: 69.15 ºC
  5. PVA-Clay film in 2 ppm MG solution
    • Onset of water evaporation: 100.51ºC
    • Heat of hydrate decomposition: 1276 J/g
    • Major peaks in water:
      • Minimum at 107ºC, other peaks at 109, 111 and 125ºC
    • Glass transition:
      • Top curve inflection point: 68.16ºC
      • Bottom curve inflection point: 68.70 ºC
  6. PVA-Clay film in 8 ppm MG solution
    • Onset of water evaporation: 98.55ºC
    • Heat of hydrate decomposition: 865.9 J/g
    • Major peaks in water:
      • Minimum at 101.19ºC, other peaks at 104, 130ºC
    • Glass transition:
      • Top curve inflection point: 68.59ºC
      • Bottom curve inflection point: 69.02 ºC
  7. PVA-Clay film in 80 ppm MG solution
    • Onset of water evaporation: 100.76ºC
    • Heat of hydrate decomposition: 1044 J/g
    • Major peaks in water:
      • Minimum at 101.94ºC, other peaks at 105, 108ºC
    • Glass transition:
      • Top curve inflection point: 68.27ºC
      • Bottom curve inflection point: 68.50 ºC
  8. PVA-Clay film in 200 ppm MG solution
    • Onset of water evaporation: 99.70ºC
    • Heat of hydrate decomposition: 1138 J/g
    • Major peaks in water:
      • Minimum at 108ºC, other peaks at 110, 131ºC
    • Glass transition:
      • Top curve inflection point: 68.54ºC
      • Bottom curve inflection point: 67.97 ºC


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