Introduction to Polymers

Question 1

History of Polymers

Nitrocellulose (1845) is also known as ___

first semisynthetic polymer

Answer 1

guncotton

Schönbein got acid on wife’s apron, dried it over the oven, exploded

Question 2

History of polymers

Bakelite (1907)
* The first synthetic polymer based on ___ and ___.
* strong and durable
* Substitute for parts in auto and electric industries.

Answer 2

phenol and formaldehyde

Question 3

Hi story of polymers

Teflon poly(tetrafluoroethylene) (1938) was used for

Answer 3

atomic bombs and to isolate hot isotopes of uranium

Question 4

History of polymers

synthetic rubbers take __ to synthesize vs ___ for natural rubbers

Answer 4

• 1h
• 7 years

Question 5

Polymers in Pharmaceutical & Biomedical products

Answer 5

• Controlled drug delivery
• Scaffolds for tissue engineering
• Oral drug delivery: Coating, Binders, Taste maskers, Protective agents
• Transdermal patches

Question 6

definition

polymer

Answer 6

a large molecule made up of many small repreating units

Question 7

Polymers are over ___mers

Answer 7

200 mers

Question 8

Oligomers are in between 30-___mers

Answer 8

100 mers

Question 9

definition

macromolecules

Answer 9

• large molecules
• Polymers are a subset of macromolecules

Question 10

definition

plastics

Answer 10

Plastic materials that can be molded, cast, extruded, drawn, thermoformed, or laminated into a product.

Question 11

Natural vs. Synthetic polymers

examples of natural polymers

Answer 11

• nucleic acids (DNA, RNA)
• proteins (gelatin)
• polysaccharides (cellulose, chitosan, alginic acid)

Question 12

Natural vs. Synthetic polymers

examples of synthetic polymers

Answer 12

• polyethylene
• poly (vinyl chloride)
• poly (tetrafluoroethylene) “Teflon”
• polyurethane
• polyacrylate
• poly(p-phenylene terephthalamide) “Kevlar”
• nylon; silicon rubber; rayon

Question 13

Polymer name

What would this polymer be called?

poly (single repeating unit)

Answer 13

poly (cute child)

not poly (cute children)

Question 14

Polymer name

What is the name of this polymer

Answer 14

poly(acrylate)

Question 15

Polymer name

What is the name of this polymer

Answer 15

Poly(methacrylate)

Question 16

Polymer name

What is the name of this polymer

Answer 16

Poly(methyl
methacrylate)

Question 17

Polymer name

What is the name of this polymer

Answer 17

Poly(hydroxyethyl methacrylate)

Question 18

Structure

What type of polymer is this?

Answer 18

homopolymer

Question 19

What type of co-polymer is this?

Answer 19

random copolymer

Question 20

What type of co-polymer is this?

Answer 20

alternate copolymer

Question 21

What type of co-polymer is this?

Answer 21

block copolymer

Question 22

What type of co-polymer is this?

Answer 22

graft copolymer

Question 23

What kind of polymer is this?

Answer 23

cross-linked

Question 24

Polymer synthesis

Condensation polymerization
* also known as ___ polymerization
* 2 or more (bifunctional) monomers carrying different ___ functional groups interact with each other
* example: ___

Answer 24

• step
• reactive
• nylon

Question 25

Polymer synthesis

Addition polymerization
* also known as free___ polymerization or ___ polymerization
* Initiation: initiated by a ___
* Propagation
* Termination: terminated by an ___ molecule
* example: ___ and __

Answer 25

• free radical, chain
• radical
• inert
• polyacrylate, polystyrene

Question 26

condensation vs addition

condensation forms __ chains while addition forms ___ chains

Answer 26

• shorter
• longer