An adhesive, also known as glue, cement, mucilage, or paste, is any nonmetallic substance applied to one surface, or both surfaces, of two separate items that binds them together and resists their separation. Adjectives may be used in conjunction with the word "adhesive" to describe properties based on the substance's physical or chemical form, the type of materials joined, or conditions under which it is applied.
Adhesive or glue is a compound in a liquid or semi-liquid state that adheres or bonds items together. Adhesives usually require a controlled temperature to cure or set. They can be electrically and thermally conductive or nonconductive.
The demand for adhesives is increasing by the day because of the introduction of bio-based adhesives due to green revolution. These eco-friendly adhesives can also be used underwater thus, increasing the demand to face an upward trend. This demand for adhesives is likely to rise in the coming years owing to the introduction of various kinds of adhesives for different purposes and its acceptance all over the world.