Glue

+Glue is an [Adhesive](/wiki/adhesive) substance used to join two or more separate [Material](/wiki/material) surfaces. It creates a lasting [Bond](/wiki/bond), transforming individual components into a unified whole through the principle of adhesion. The use of glue is ancient, with early forms derived from natural sources, and has evolved significantly with modern [Chemistry](/wiki/chemistry) to include a vast array of synthetic formulations. Glues are critical in numerous industries, from construction to manufacturing, and are ubiquitous in everyday life. They function by creating strong intermolecular forces or mechanical interlocks between surfaces.

+## Types of Adhesives

+Glues can be broadly categorized based on their [Origin](/wiki/origin), [Composition](/wiki/composition), or [Curing Mechanism](/wiki/curing-mechanism).

+- **Natural Adhesives**: These are derived from natural sources. Examples include [Animal Glue](/wiki/animal-glue) (e.g., hide glue, bone glue, casein glue) and [Plant Glue](/wiki/plant-glue) (e.g., starch, natural rubber, cellulose-based). They have been used for millennia and are often biodegradable.

+- **Synthetic Adhesives**: These are man-made and constitute the vast majority of modern glues. They offer a wide range of properties tailored for specific applications. Common types include:

+Glue is an [Adhesive](/wiki/adhesive) substance used to join two or more separate [Material](/wiki/material) surfaces. It creates a lasting bond, transforming individual components into a unified whole through the principle of adhesion.

+## See also

+- [Bond](/wiki/bond)

+- [Polymer](/wiki/polymer)

+- [Binder](/wiki/binder)