Cyanoacrylates, commonly known as super glue, harden by reacting with:
Correct answer: D. Moisture
- A. UV light
- B. Heat
- C. An added catalyst
- D. Moisture
Explanation
Cyanoacrylates, or super glues, are known for their rapid bonding capabilities. They harden through a reaction with moisture, such as humidity in the air or water on the surfaces being bonded. This moisture triggers the polymerization process, causing the adhesive to set quickly. The other options, such as UV light, heat, and an added catalyst, are not necessary for cyanoacrylates to cure and harden, making them incorrect in this context.
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Industrial chemistry applies chemical reactions and material properties to the manufacture of adhesives, dyes and polymers. Coverage includes addition and condensation polymerisation, thermoplastics and thermosetting polymers, the structural basis of colour in dyes, and how adhesive composition enables bonding between surfaces.
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