Which of the following statements about biodegradable polymers is true

PROBLEM Set 4

1. Identify all functional groups present in the following molecules.

a.

b.

c.

PROBLEM Set 4

2. Name the following organic structures.

a.

b.

c.

d.

e.

f.

PROBLEM Set 4

3. Draw 4 isomers for the following structure.

4. Draw part of the repeating structure of polyacetylene.

5. Explain how an addition polymer differs from a condensation polymer.

6. Compare thermoplastic and thermosetting polymers.

PROBLEM Set 4

7. Compare and contrast the molecular structure and performance characteristics of LDPE and HDPE.

8. The monomer of polypropylene is

A) CH2 CH CH3. B) CH3CH3.

C) CH3CH2CH3. D) CH2 CH2.

9. The monomer used to make PVC is

A) Cl2C CH2.

B) F2C CF2.

C) H2C CHCl

D) H2C CH2.

10. The segment of a polymer shown below represents a

A) polyethylene. B) polyester. C) polyamide. D) polystyrene.

11. Which of the following statements about addition and condensation polymers is true?

A) Condensation polymers contain all of the atoms of the original monomers, but addition polymers do

not.

B) Addition polymers contain all of the atoms of the original monomers, but condensation polymers do

not.

C) Both addition polymers and condensation polymers lose some atoms from the original monomers

when the polymer is formed.

D) Both addition polymers and condensation polymers contain all of the atoms of the monomers.

12. All of the following statements about biodegradable polymers are true EXCEPT 9) _______

A) their glass transition temperatures are very high.

B) some can biodegrade by composting.

C) the most sustainable approach is to use renewable resources, especially non-food crops, as a monomer source.

D) many require microorganisms to degrade them.