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Chapter 27: Q31P (page 1209)

Show the mechanism for the transesterification reaction that recycles poly (ethylene terephthalate) to dimethyl terephthalate and 1,2- ethane diol when the polymer is heated in an acidic solution of methanol.

Short Answer

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Mechanism

Step by step solution

01

Trans-esterification reaction

The trans-esterification reactions take place in the presence of acids. It involves the formation of an ester using corresponding carboxylic acids and alcohols. The presence of acid is used to initiate the reactions.

02

Explanation

The mechanism for the trans-esterification of polyethene terephthalate is shown below.

Mechanism

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Most popular questions from this chapter

a. Draw three segments of the polymer that is formed from 1,4-polymerization of 1,3-butadiene in which all the double bonds are trans.

b. Draw three segments of the polymer that is formed from 1,2-polymerization of 1,3-butadiene.

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b. Draw a short segment of nylon 44.

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