华南理工大学材料导论高分子答案终极版

Define the following terms.

1.Monomer, Oligomer, the repeating unit

2.Thermoset and Thermoplastic

3.Condensation polymerization and Free radical polymerization reaction

4.Alternating copolymer, Block copolymer

5.Branched Polymer, syndiotactic polymer, atactic polymer

6.Crosslinking, vulcanization

7.Configuration，Conformation

8.Glass Transition Temperature

9.Melt index，Melt fracture，Die swell

pression molding, Extrusion, Injection and Blow molding

Multiple choices.

1.Tire cords, the film used as backing for magnetic recording tape in audio and video

cassettes, and plastic soft-drink bottles are all composed of what polymers?(D) LDPE better

a. poly(tetrafluoroethylene四氟乙烯)

b.high-density polyethylene高密度聚乙烯

c.nylon

d.poly(ethylene terephthalate)聚对苯二甲酸乙二酯

2.What term is used to indicate a polymerization that occurs without the growth of a

chain monomer by monomer, but instead occurs as monomers form dimers, dimers form tetramers, etc.? (C)

a. Non-chain

b. Discontinuous

c. step-growth

d. irregular-increment

3.Who developed catalysts that can produce, exclusively, either isotactic or syndiotactic

polymers? (B)

a.Carothers （尼龙的发明者）

b.Ziegler and Natta

c.Staudinger

d.Goodyear

4.Who gave the macromolecular hypothesis（大分子假设）？

(C)

a.Carothers

b.Ziegler and Natta

c.Staudinger

d.Goodyear(发现硫化)

5.Fabrics or films made of which of the following polymers are most sensitive to damage

from solutions of strong bases? (A)

a. Nylon

b. Polyethylene

c. poly(vinyl chloride)

d. polystyrene

6.Who produced billiard balls using collodian as a substitute for ivory? (A)

a.Hyatt

b.Stine

c.Goodyear

d.Staudinger

7.In which polymer is -(-CF2-CF2-)n- the repeating unit? (D)

a.Acrilan

b.Orlon

c.Lucite

d.Teflon

8.The repeat unit in a polymer is called the (A)

a. monomer

b. oligomer

c. degree of polymerization

d. mer

9.The smallest repeating unit of a polymer is: (B)

a. Polymers

b. Monomers

c. Oligomers

d. dimer

10.In a Isotactic polymer, (A)

a.the side groups on a polymer chain are all generally on the same side of the polymer

chain.

b.the side groups of the polymer chain generally alternate their orientation from one side

to the other.

c.the side groups of the polymer chain occur randomly on both sides of the polymer

chain.

d.there are no side groups on the polymer chain.

tex is the source of: (C)

a.nylon.

b.isoprene.

c.natural rubber.

d.cis-1,4-polybutadien

e.

12.The type of polymer that is linear and distorts with heat is called (C)

a. cross-linked

b. thermoset

c. thermoplastic

d. highly branched

13.PE polymerization occurs in steps with the following order: (B)

a. initiation, activation, propagation, termination

b. activation, initiation, propagation, termination

c. propagation, initiation, activation, termination

d. termination, activation, initiation, propagation

14.If A and B represent mers in a polymer, which is the random copolymer (A)