Abstract

In this chapter, the cyanoacrylates are discussed. Cyanoacrylate adhesives are monomeric adhesives. They are generally quick-setting materials, which cure to clear, hard glassy resins, useful as sealants, coatings, and particularly adhesives for bonding together a variety of substrates. Polymers of alkyl 2-cyanoacrylates are also known as superglues. Commercial products consist mainly of monofunctional cyanoacrylate monomers. In addition to their use as adhesives, cyanoacrylates have been reported to have highly herbicidal properties, as they disrupt photosynthetic electron transportation. Since good adhesion bond strengths are difficult to achieve, thickeners are added to increase the viscosity of 2-cyanoacrylate adhesive compositions. Stabilizers have to be added both for the production and for storage. Cyanoacrylates can be polymerized both by radical and by anionic mechanisms and their polymerization has been monitored by Raman spectroscopy. They can be used for skin surface biopsy because the polymers are formed with moisture and they adhere to the skin.

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