User:Elizabeth Ghias/Notebook/Experimental Chemistry/2012/09/12

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Objective

To make a film containing PVOH/glutaraldehyde, prepare 100% and 50% CEC clay with HdPh3P+, and to prepare Na-MT coated with iron oxide.


Description

PVOH/Glutaraldehyde Film

  1. 0.5 g PVOH was dissolved in 5 mL water on a heated hot plate.
  2. Once dissolved, 0.8% wt Glutaraldehyde solution (1 mL) was added.
  3. The gel was then poured into a plastic dish and was allowed to evaporate over the weekend.


100% CEC Clay Preparation

  • HdPh3P+ = (1-Hexadecyl)triphenylphosphonium Bromide
  1. 0.92 meqv/g surfactant (HdPh3P+, 1.06 g) was added to 2 g of Na-MT in a solution of 25 mL ethanol and 25 mL water.
  2. The clay was left for a week to stir


50% CEC Clay Preparation

  1. Half as much surfactant as was used for the 100% CEC clay (0.53 g) was added to 2 g of Na-MT in a solution of 25 mL ethanol and 25 mL water.
  2. The clay was left to stir for a week.


Na-MT coated iron oxide preparation


Data

100% CEC Clay Calculations

(0.92 meqv/g surfactant)·(2 g clay)·(1 eqv/1000 meqv)·(1 mol surfactant/1 eqv)·(567.62 g/mol surfactant) = 1.06 g surfactant


Notes

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