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Chapter 30: Question 30.14 (page 1211)

The polymerization under radical conditions affords products A and B. Draw a mechanism that accounts for their formation.

Short Answer

Expert verified

Answer

Mechanism of the reaction

Step by step solution

01

Buta-1,3-diene

Buta-1,3-diene is an organic compound made up of four carbons and consists of alternate double bonds.The polymerization of this compound has two possibilities of product formation:

  1. Original structure (which repeats several times)
  2. Branching
02

Formation of A

The initiation of the polymerization begins with the free radicals. The mechanism of formation of A is shown below.

Mechanism of formation of A

03

Formation of B

The same steps have to be followed for the formation of B. The mechanism is shown below.

Mechanism of formation of B

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Most popular questions from this chapter

Draw the products of each reaction.

(a.)

(b.)

(c.)

(d.)

(e.)

(f.)

(g.)

(h.)

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(a.)and

(b.)

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Draw a stepwise mechanism for the anionic polymerization of styrene (CH2=CHPh) to form polystyrene -(CH2=CHPh)n using BuLi as an initiator. Use CO2 as the electrophile that terminates the chain mechanism.

Draw a stepwise mechanism for the conversion of acrylonitrile (CH2=CHC鈮�N)to polyacrylonitrile, -[CH2=CHC鈮�N]n, using butyllithium(BuLi) as the initiator and CO2 as the electrophile to terminate the chain.

Draw the structures of Quiana and Nomex, two commercially available step-growth polymers formed from the given monomers. Nomex is a strong polymer used in aircraft tires and microwave transformers. Quiana has been used to make wrinkle-resistant fabrics.

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