Why Is Rubber Elastic

This can be repeated many times with no apparent degradation to the rubber.

Why is rubber elastic. Stress strain isotherms of networks in general fall between the predictions of these two limiting models. It can be stretched by up to a factor of 10 from its original length and when released returns very nearly to its original length. What makes rubber so elastic. The rubber bands connect to small hooks on the.

The elastics allow for the jaw and bite alignment to occur and are the patient s responsibility as they are removable and replaceable. 3 elastic free energies from theoretical network models. Most rubber bands are manufactured out of natural rubber or especially at larger sizes elastomer and are sold in a variety of sizes. Rubber elasticity refers to a property of crosslinked rubber.

Like plastic rubber is a polymer which is a chain of repeating units called monomers in rubber the monomer is a carbon compound called isoprene that has two carbon carbon double bonds. Erman in encyclopedia of materials. The latex fluid that seeps from rubber trees has many isoprene molecules. When you stretch a rubber band the work done is spent on ordering the polymer chains and it immediately appears as heat released.

The result is a property called elasticity the polymers are elastic. Rubber elasticity is in general described in terms of two models. Unlike the rigid materials which store the energy within them in the form of potential energy elastic polymers immediately release the energy in the form of thermal energy. The rubber bands should be changed out for new ones about three times a day or after every meal so that they may hold enough elasticity for the movement needed.

Science and technology 2001. Because these polymers are so long they can be thousands of molecules long they get tangled up in themselves. Rubber is a member of a larger class of materials called elastomers and it is difficult to overestimate their economic and. A the phantom and b the affine network models.

That is why rubber bands are elastic.