chem lab 8 - Experiment 8: Polymers By Chris Bostick Lab...

Info iconThis preview shows pages 1–3. Sign up to view the full content.

View Full Document Right Arrow Icon
Experiment 8: Polymers By Chris Bostick Lab Instructor Chris Sgro November 16, 2005
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Results and Discussions: In this experiment a PVA was created from polymerizing vinyl acetate to form poly (vinyl acetate). PVA contains a large number of OH groups which makes it an excellent hydrogen donor and acceptor. By adding a borate ion to it, cross-linking will occur changing the viscosity. In this experiment substances were added to PVA and the viscosity was measured to determine the effects on viscosity. The viscosity was qualitatively measured 4 times in this experiment, once after step 4, 6, 7, 9, and 10. The viscosity was measured qualitatively on a 1-10 scale where 1 is least viscous like water, and 10 is most viscous like a solid. 1) 2.06 grams of white powdery PVA was dissolved in almost boiling water at 90 degrees Celsius. The viscosity was analyzed qualitatively, and then methyl red indicator was added turning the solution a yellowish color. Viscosity after step 4: The viscosity was found to be around 5 like warm maple syrup.
Background image of page 2
Image of page 3
This is the end of the preview. Sign up to access the rest of the document.

Page1 / 3

chem lab 8 - Experiment 8: Polymers By Chris Bostick Lab...

This preview shows document pages 1 - 3. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online