Question
Plexiglas, a clear plastic used to make many molded articles, is made by polymerization of methyl methacrylate. Draw a representative segment of Plexiglas.
Step 1
The structure of methyl methacrylate is as follows: \[ \begin{array}{c} \text{H}_{2}\text{C}=\text{C}(\text{CH}_{3})-\text{COOCH}_{3} \end{array} \] Show more…
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Plexiglas (PMMA) is a polymer of (a) methyl methacrylate (b) methyl acrylate (c) acrylic acid (d) none of these
The structure of methyl methacrylate is given in Table $23.12 .$ Draw the structure of a polymethyl methacrylate (PMMA) polymer that has four monomer units. (PMMA has excellent optical properties and is used to make hard contact lenses.)
Methyl methacrylate has the structural formula shown in Table 10.6 (Sec. $10-6 \mathrm{a}$ ). When polymerized, it is very transparent, and it is sold in the United States under the trade names Lucite and Plexiglas. (a) Use structural formulas to write the chemical equation for the formation of a segment of poly(methyl methacrylate) having four monomer units. (b) Identify the repeating unit in the polymer.
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