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In preparation for exploring Vincent Amendola's PVA/Guar Gum/J-Lube recipe , I mixed up a 10% PVA Solution using Polyvinyl Alcohol powder purchased in 2011 or so. I know nothing about the particular type of polyvinyl alcohol that this is. The chemistry supply store had no information to offer at the time of purchase. I've made 1% and 2% solutions in the past by simply sprinkling PVA powder into water that I was stirring by hand and then warm slightly and stirring some more.

20181021 0375 PVA powder container

Generic PVA from a local lab equipment store

 

Ingredients:

  • 90 grams distilled water
  • 10 grams polyvinyl alchohol powder

I sprinkled the PVA powder into room temperature distilled water while stirring by hand. When I was done sprinkling the powder, the solution was milky/chalky. I put the beaker in the microwave for 20 seconds to warm it. The solution became clear with a white sediment.

I stirred some more. The solution was somewhat milky. Repeated the warm then stir cycle a few times until the solution was clear. At that point it had a syrupy viscosity. It didn't turn out entirely transparent -- but there doesn't seem to be any sediment. It is translucent and perhaps trapped air is making it not completely transparent.

We'll see!

NOTES

PVA Glycerine Problem

PVA Glycerine Problem

Glycerine/Aqueous PVA Issue: 
In trying to mix up Vincent Amendola's PVA/GUAR/PEO Recipe, I ran into a problem. When this aqueous PVA solution is added directly to a largely glycerine solution, the PVA turns into a discrete rubbery mass distinct from the glycerine solution. I found that if I added some propylene glycol to the PVA solution before adding to the glycerine/guar slurry that this didn't happen. I added 10 grams of propylene glycol to 15 grams of 10% PVA solution. I suspect that Vincent doesn't run into this problem because the PVA product he uses has some isopropanol which probably also prevents the PVA some separating out.