How do rubber erasers work?
Just so, is eraser made of rubber?
Eraser, piece of rubber or other material used to rub out marks made by ink, pencil, or chalk. The modern eraser is usually a mixture of an abrasive such as fine pumice, a rubbery matrix such as synthetic rubber or vinyl, and other ingredients.
Beside above, why do some pencil erasers not work? You can't really stock up on erasers because they dry out.” (This idea inspired the slogan on a t-shirt the Erasable podcast sells: “Pencil is forever.”) Advincula explained: “Over time, some of the rubber properties can be lost because of oxidation or chemical degradation.
Hereof, why are erasers made of rubber?
Erasers are made out of rubber because it is a nonpolar solid material which attracts other nonpolar solids, like graphite. The way it is malleable and crumbles (like others mentioned) makes it less abrasive to the paper itself.
What can you use instead of a rubber?
Silicone is a good substitute for rubber. It is man-made material that is typically inert, contains low toxicity levels and is largely heat-resistant. For these reasons and due to its rubber-like texture, it's often used in cookware as well as in lubricant and adhesive materials.