Sample interview questions: Can you discuss your familiarity with the role of polymers in corrosion protection or surface functionalization?
Sample answer:
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Role of Polymers in Corrosion Protection:
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Barrier Coatings:
- Polymers, such as epoxy resins, polyurethanes, and fluoropolymers, can be applied as coatings to create a physical barrier between the metal surface and corrosive environments.
- These coatings prevent direct contact of the metal with corrosive agents, reducing the rate of corrosion.
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The barrier properties of polymers can also protect metal surfaces from mechanical damage and abrasion.
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Inhibitive Coatings:
- Polymers can be formulated with corrosion inhibitors, which are chemicals that slow down or prevent the corrosion process.
- These inhibitors can be incorporated into the polymer matrix or released gradually from the coating over time.
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They work by interfering with the electrochemical reactions that lead to corrosion, such as the formation of rust on iron.
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Self-Healing Coatings:
- Some polymers can be designed to have self-healing properties, meaning they can repair damage to the coating without external intervention.
- These coatings contain microcapsules filled with healing agents, such as corrosion inhibitors or repair resins.
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When the coating is damaged, the microcapsules rupture and release the healing agents, which then fill the damaged area and restore the protective properties of… Read full answer