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Silly Putty Essay Preview: Silly Putty Report this essay Silly Putty Materials: Polyvinyl alcohol (PVA) – composed of long chain of repeating units (polymer) of vinyl alcohol with the molecular formula of (CH2CHOH-)n or CH2CHOH. 4% PVA was used in the activity. This substance is colorless, odorless, and water –soluble. 16% Sodium Borate (Borax) –.