What Causes A Rubber Band To Stretch

Leaving rubber out in the sun too long can cause the polymers and plasticizers to deteriorate causing that bounce back aspect of rubber to disappear.

What causes a rubber band to stretch.

Finally the polymers and molecules in rubber prefer to be warmed up to have maximum flexibility and resilience so stretching rubber out in cold weather can sometimes be dangerous. The properties that make an elastic band a useful item can also be annoying when the elastic is too tight. Elastic can be stretched in several ways. Rubber is a member of a larger class of materials called elastomers and it is difficult to overestimate their economic and.

There is something else that makes rubber stretchy and that is called cross linking. Most rubber bands are manufactured out of natural rubber or especially at larger sizes elastomer and are sold in a variety of sizes. And this particular property is pretty evident in rubber bands that can be stretched to as big a size as possible and can return back to their original shape and size when let loose. The appropriate fix depends on how much extra room you need.

Most rubber objects are made of some kind of cross. In this case the linear function fitting the straight part of the data gives a spring constant of 17 38 n m. After you get the rubber band stretched just a little bit it is very spring like. You want the rubber band to visibly stretch out when you hang the quarters from it but not so much that it hits the bottom of the bottle.

Rubber elasticity refers to a property of crosslinked rubber. You want the band to be bigger but the rubber section of the band has been treated to stretch and then return to its original size. Rubber in fact is blessed with the unique ability to stretch to different sizes and come back easily to its original shape and size mostly. A final word next time you throw your hair up into a ponytail perhaps you ll think twice about the rubber band you so carelessly stretch around your locks.

If you give rubber bands more heat energy they will continue to shrink increasing their entropy while exposing them to cold will cause them to loosen stretch and expand. Whenever molecules break out of crystals they absorb heat hence the reason the rubber band now goes cold. Next if you take a hair dryer and heat the rubber band the heat will cause the polymers to want to coil back up and you can watch the rubber band then shrink and pull the weight back up a little bit. A strong rubber band may require more quarters a weaker.

When you let go of the rubber band the polymer molecules break out of the crystals. This can be repeated many times with no apparent degradation to the rubber. Rubber bands are made of natural rubber.