Sweet DIY gummy bear glue
How to make glue using gymmy bear
Just how mighty can gummy bears be? Can they glue bricks together? Check this video for the answer!
Conduct the experiment under adult supervision only.
- three packs of gummy bears;
- glass bowl;
- water bath;
- two bricks;
Empty three packs of gummy bears into a glass bowl and melt them in a water bath. When they turn into a thick, viscous mass, use a paintbrush to apply this mass to a brick. Press with a second brick and wait 2 minutes for the “glue” to harden. The bricks are cemented together!
Gummy bears contain gelatin, an additive derived from an animal protein known as collagen. It is used as a thickener or gelling agent in foods, medicines, and cosmetics. When introduced to water, gelatin granules swell and increase in volume. If the swollen gelatin is heated to approximately 50°C, it will melt to form either a liquid or a viscous mass depending on concentration. Gelatin is capable of acting as an adhesive. Moreover, gummy bears contain glucose syrup (usually up to 43% glucose), which contributes to their adhesive properties. When heated, the gummy bears form a viscous, sticky mass.
The interactions between an adhesive and the surfaces it connects vary in accordance with their structures:
van der Waals – intermolecular forces arising due to interactions between the molecules’ dipole moments and polarization of the electron shells;
Chemical – the formation of various chemical bonds between surface atoms;
Electrostatic – the interaction of different charges;
Diffuse – mutual permeation of the adhesive and the surface into each other.