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Bioadhesives

Abstract

There is a pervading presence of adhesive joints in nature. Adhesive secretions are used by organisms for attachment, construction, obstruction, defense, and predation. Most natural materials are hybrid materials combining organic and inorganic building blocks. Bioadhesives are able to build durable interfaces between hard and soft materials, often of disparate scales, and exhibit a certain number of characteristics that make them differ greatly from synthetic adhesives. The title of this chapter (Bioadhesives) includes a broad variety of different concepts: natural adhesives, biological adhesives, biocompatible adhesives, and biomimetic and bioinspired adhesives. The term natural adhesive describes substances that are formulated from partially or totally bio-based raw materials, which are employed as adhesives in man-made technology, but are not substances used by biological systems as glues. The term biological adhesive refers specifically to adhesive secretions