How to Corrode a Polymer Lab Investigation

In the corroding a polymer lab we needed to separate all the monomers that created a polymer.  We did this by adding corrosive materials.  The materials that we added into our four polymers were nail polish remover or Acetone, lemon juice, and ethyl.  The polymers that were created was a mixture of water, borax (hydrated sodium borate), and white glue (polyvinyl acetate.)  The polymers that were freshly created looked like this:  

This was the size of all four polymers.  Once we molded them more into a ball shape we put them in individual beakers.  They were label: "Control", "Acetone", "Lemon Juice", "Ethyl."  We did not mix anything with the control polymer.  With the Acetone labeled polymer, we added the nail polish remover.  With the "Lemon Juice" polymer we poured freshly-squeezed lemon juice into it.  The "Ethyl" polymer was mixed with ethyl alcohol.  

          We stirred slowly while we poured the corrosive materials into the polymer beakers.  After that we stirred about ten second every minute for three minutes.  At the first stirring no results were shown.  By the second, the lemon juice polymer was shrinking at a pretty rapid rate.  The Acetone polymer was wrinkling up along with the ethyl alcohol polymer.  This is what the Acetone polymer looked like by the third stir:   

  The only difference between the Acetone polymer and ethyl was how the ethyl polymer was slightly bubbling by the third stir.  The Acetone and ethyl polymers pretty much stayed the same size.  The lemon juice polymer was shrinking and shrinking.  It shrunk about 80% by the end of the experiment:

I partially accepted my hypothesis.  This is because only one of our corrosive materials actually dissolved the polymer.