Exam 26: Synthetic Polymers

Which of the following elements is necessary to the vulcanization of rubber?

Which of the following monomers is least readily polymerized under conditions of anionic polymerization?

What type of polymer is formed from ethylene glycol and a diester as monomer components?

What type of polymer is formed from lactam monomers?

What are copolymers?

What substance results from the 1,4-polymerization of 1,3-butadiene?

Which of the following monomers is most well-suited to cationic polymerization?

Provide a mechanism to show how H₂C-CHCO₂CH₃ is polymerized using butyllithium as the initiator.

Provide the structure of ε-caprolactam, the monomer from which nylon 6 is formed.

Provide the structure of the monomer from which polypropylene is formed.

Show how branching could occur during the free-radical polymerization of styrene.

Show each step in the mechanism for the following transformation. Include all intermediates and be sure to use arrows correctly to indicate placement of electrons.

Which of the following is the best initiator for a free-radical polymerization?

________ polymers result from polymerization reactions in which chain growth is accompanied by loss of a small molecule.

Which of the following polymers can be classified as copolymers?

Draw the structure of the polymer produced in the following reaction.

Polymers composed of identical monomer units are known as ________.

Is the polymer shown an addition polymer or a condensation polymer?

Provide a representation of atactic polypropylene.

Provide the structure of the monomer from which poly(methyl α-methacrylate) is formed.