Slime - Permanent gels made from solvent saturated...

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The Gelation of Polyvinyl Alcohol with Borax Jeff Maciborski Tony Salamone 5/1/01 Instructor – Dr. Marand
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Gelation Synthesis Polymerization of vinyl acetate Hydrolysis of poly(vinyl acetate)
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Gelation Synthesis Boric Acid – Borate Buffer Gelation of Poly(vinyl alcohol)
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PVA – Borax Gel Characteristics Water Soluble Gel able to form at very low solute concentrations Network structure responsible for “slime” like properties -Tetrafunctional cross-links -Reformable hydrogen bonds
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Gel Properties Thermoreversible versus permanent Thermoreversible gels transform from solid- like to liquid-like form at a characteristic temp
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Unformatted text preview: Permanent gels made from solvent saturated covalently bonded polymer networks. • Other cross-linking mechanisms: SLIME LAB • Add two or three drops of food coloring to borax solution (cup A) • Mix thoroughly with proper laboratory agitation utensil (a.k.a. pop-sickle stick) • Pour PVA solution (cup B), followed by borax/food coloring solution into Wall-Mart brand plastic bags. Be extremely careful in handling bags. • Shake vigorously until mixture thickens • Remove gel from bag; proceed with the tomfoolery • Do not eat or place in any parts of the body where retrieval might be difficult...
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This note was uploaded on 12/24/2011 for the course MSE 4554 taught by Professor Staff during the Fall '08 term at Virginia Tech.

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Slime - Permanent gels made from solvent saturated...

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