For a general chemistry lab, we are experimenting with polyvinyl alcohol and sodium borate. This is the objective we were given:
"Local baby food manufacturer, Yummies, needs to find a material for packaging its new toddler snack line. A polymer, polyvinly alcohol (PVA), is odorless, nontoxic, and biodegradable. Your objective is to explore the change in physical properties of this polymer as a result of cross-linking (with sodium borate). Report your assessment of this polymer as a packaging material, and the reagent amounts, tests, and physical properties you performed."
Any suggestions on what tests to perform in order to create a suitable packaging product? Any information would be greatly appreciated.