User:Alex Lutz/Notebook/Experimental Chemistry - 481/2018/09/19

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Objective

Continue with setting up the experiment: mainly to attach the two tubes together and see if we can control the flow rate through each one.

Description

  1. First created a longer version of our test from [Friday] using the paperclip method (Sticking a paperclip into the 1/32" tubing, we cut perpendicular to the tubing as before but the paperclip now stops the knife from cutting too deeply so that the smaller tube can be placed inside without any leaks forming.)
  2. Attached two syringes (one 30mL the other 3mL) to the pump within the apparatus.
    1. Had to set the pump with special parameters (attained from the smaller syringe) of a diameter of 9.17mm and a total volume of 3mL.
  3. Tested running water (in the smaller syringe) and ethyl acetate (in the larger syringe) and a speed of 0.05mL/min seemed to work best for creating small "beads" to form.
  4. Testing running Polyvinyl Acetate (PVA) (in the smaller syringe) and ethyl acetate (in the larger syringe) at 0.05mL/min for further testing.
  • Tested 1mL/min, 2mL/min, 0.05mL/min, 0.5mL/min

Notes

Personally, I am a little doubtful about the creation of the "beads". There were small air bubbles present in the syringes which I suspect caused the formation of the beads. Will need to do further testing with different flow rates to see what is the best for formation - hopefully papers will contain something so that a range can be established.