User:Jerinbrooks/Notebook/JB:481:18/2018/10/31

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Lab Protocol

Hydration test 
100 mg of PVA/clay beads and PVA beads 
50 g of distilled water
measure bead mass before and after one week

Data

DSC Analysis
  • PVA/clay beads
    • RL: Tzero pan mass 40.76 mg, sample mass 3.42 mg
    • JN: Tzero pan mass 40.79 mg, sample mass 4.52 mg
    • AJRL Tzero pan mass 40.92 mg, sample mass 3.22 mg
    • JB Tzero pan mass 40.62 mg, sample mass 3.44 mg
    • RG Tzero pan mass 40.47 mg, sample mass 3.02 mg
  • PVA (Sigma Aldrich), lot#MKBJ6397V, Mw 31,000-50,000, 98-99% hydrolyzed
    • RL:pan mass 40.74 mg, sample mass 4.50 mg
    • JN: pan mass 40.48 mg, sample mass 4.38 mg
    • AJRL: pan mass 40.57 mg, sample mass 5.41 mg
    • JB: pan mass 40.24 mg, sample mass 3.21 mg
    • RG: pan mass 40.59 mg, sample mass 4.74 mg
DSC Procedure 
  • equil 20 degrees C
  • isothermal for 1 minute
  • ramp 10 degrees C/minute to 250 degrees C
  • isothermal for 1 minute
  • ramp 10 degrees C/minute to 20 degrees C
  • repeat segment 2 for 1 times
  Hydration Test
 PVA/clay beads
  • sample 1: 0.12511 g beads, 52.2327 g water
  • sample 2: 0.126141 g beads, 50.1840 g water
PVA beads
  • sample 1: 0.12639 g beads, 50.0187 g water
  • sample 2: 0.12515 g beads, 50.0760 g water