Which substance is an example of a synthetic polymer that functions as a non-reactive, thermoplastic hot-melt adhesive?
Correct answer: D. Ethylene-vinyl acetate
- A. Epoxy resin
- B. Cyanoacrylate
- C. Bakelite
- D. Ethylene-vinyl acetate
Explanation
The correct answer is Ethylene-vinyl acetate. This substance is known for its use as a hot-melt adhesive due to its thermoplastic nature, allowing it to melt and flow at elevated temperatures and solidify upon cooling. It is non-reactive, making it suitable for applications where a reversible adhesive is needed. In contrast, Epoxy resin and Bakelite are thermosetting plastics that cannot be remelted once set, and Cyanoacrylate is a reactive adhesive that hardens quickly on contact with moisture, not suitable for hot-melt applications.
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About Industrial Chemistry
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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