Contact lens material identification: “Perspex” is the commercial name for which polymer used historically in optical applications?
Chemical Engineering
Polymer Technology
Difficulty: Easy
Choose an option
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APolymethyl methacrylate (PMMA)
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BPolystyrene (PS)
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CUnsaturated polyester
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DPolypropylene (PP)
Answer
Correct Answer: Polymethyl methacrylate (PMMA)
Explanation
Introduction / Context:Perspex, Lucite, and Plexiglass are trade names for PMMA, valued for optical clarity and biocompatibility in many lens and medical applications. Correct name recognition avoids material confusion with PS or PC.
Final Answer:Polymethyl methacrylate (PMMA)