User:Melissa Novy/Notebook/CHEM-581/2012/09/12

From OpenWetWare

Jump to: navigation, search

Search this Project

Customize your entry pages

Objectives

  • Make 0.8 wt% glutaraldehyde in PVOH (MW 22000) film.
  • Exchange 2.0 g Na-MT with 100% tributyl(hexadecyl)phosphonium bromide (Bu3HdP+).
  • Exchange 2.0 g Na-MT with 50% (Bu3HdP+).
  • Make 2.0 g Na-MT coated with Fe3O4 in a 2:1 ratio of Na-MT to Fe3O4.
  • Run DSC on crosslinked and uncrosslinked PVOH (MW 22000) films.

Na-MT/Bu3HdP+ Exchanges

  • 100% exchanged Na-MT and Bu3HdP+:
    • Mass Na-MT: 2.0095 g
  2.0095 g Na-MT x (92 meqv/100 g Na-MT) x (1 mol Bu3HdP+/1000 meqv) x (100/100)% x (507.65 g Bu3HdP+/1 mol Bu3HdP+) = 0.9385 g Bu3HdP+


  • 50% exchanged Na-MT and Bu3HdP+
    • Mass Na-MT: 2.0046 g
  2.0046 g Na-MT x (92 meqv/100 g Na-MT) x (1 mol Bu3HdP+/1000 meqv) x (50/100)% x (507.65 g Bu3HdP+/1 mol Bu3HdP+) = 0.4682 g Bu3HdP+

Na-MT Coated with Fe3O4

DSC on Crosslinked and Uncrosslinked PVOH (MW 22000) Films

  • Please refer to entry on 2012/09/07 for DSC procedure.
  • PVOH (MW 22000)
    • Pan mass: 49.78 mg
    • Sample mass: 3.20 mg
  • Uncrosslinked PVOH (MW 22000), 10% maleic acid, HCl
    • Pan mass: 50.41 mg
    • Sample mass: 2.90 mg
  • Uncrosslinked PVOH (MW 22000), 10% succinic acid, HCl
    • Pan mass: 49.26 mg
    • Sample mass: 2.92 mg
  • Crosslinked PVOH (MW 22000), 15% maleic acid, H3PO4
    • Pan mass: 49.96 mg
    • Sample mass: 3.13 mg
  • Crosslinked PVOH (MW 22000), 15% succinic acid, H3PO4
    • Pan mass: 49.70 mg
    • Sample mass: 3.10 mg

PVOH and Glutaraldehyde Film

  • To make 0.8 wt% glutaraldehyde in PVOH film:
    1. Dissolve 0.5 g PVOH (MW 22000) in 5 mL H2O by heating and stirring.
    2. Place solution in fume hood to cool to 40-50°C.
    3. Add 0.5 mL 8% glutaraldehyde to the solution, then pour into a Teflon dish and let cool overnight in the fume hood.
  • Please refer to Karlena Brown's entry for glutaraldehyde safety precautions.



Personal tools