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Superballs are made of the material vulcanized polybutadiene. When Norman Stingley synthesized this compound inhe gave it the flashy name Zectron. Polybutadiene molecules are essentially long chains of thousands of carbon rubber.
Like rubber bands, these chains face elastic and regain their original shape if stretched. When polybutadiene is heated at high pressure in the presence of sulfur, a chemical reaction called vulcanization occurs.
The reaction causes sulfur atoms monster dick nubile forge connections between carbon chains creating a giant network.
In other words, the sulfur atoms act as bridges. These bridges restrain the carbon strands from sliding past each other, making the material harder and more durable.
Bouncing & Rubber Balls
Thus, when balls superball bounces, its shape barely distorts. Tennis balls and racquetballs flex and compress a lot in comparison. Because the sulfur bridges limit how much with superball flexes, little energy of motion is expended to return the superball to its original shape.