A super-strong adhesive with the ability to "peel off" was made from cellulose

Most current superglues have two major drawbacks: they are usually made with harsh chemicals and are difficult to peel off.

An international team of researchers has created a plant-based superglue that can be easily peeled off and removed if needed. Its active ingredient is cellulose nanoparticles obtained from agricultural waste and papermaking.

To glue two surfaces, it is necessary to apply nanoparticles to them, add water, connect and heat. During the heating process, the water evaporates, forcing the particles to form strong bonds, turning into layers of cellulose nanocrystals tightly adjacent to each other.

Surfaces glued with just one drop of super glue can withstand tensile forces of up to 90 kg. However, if the two surfaces are pulled sideways in opposite directions, a slight break occurs. In fact, the strength of the "non-working" glue is one seventy of the "working". It is very easy to remove the glue from the surface - just rub it with your finger.

Currently, gluing surfaces takes about two hours, which can be reduced by increasing the heating temperature. However, as it turned out, the higher the temperature (over 50 ° C), the smaller the final bonding area.

Scientists hope that as technology develops, superglue will find applications in electronics or packaging that can then be easily disassembled and disposed of after the expiration date.