Polymers

1
Chapter 18

• Polymers

2
Polymers

• Macromolecule
• Polymer
• Monomer
• Homopolymer
• Copolymer

3
Types of Synthetic Polymers

• Elastomers
• Fibers
• Plastics

4
Polymer Structure

• Linear Polymers
• Branched Polymers

5
Joining of Polymer Chains

• Attraction of polymer chains
• Bonding of polymer chains cross-links

6
Affect of Heat

• Thermoplastic polymers
• Thermosetting polymers

7
General Classification of Polymers

• Addition polymers
• Condensation polymers

8
Addition Polymers

• Monomers
• Initiator
• Inhibitor
• Reaction conditions

9
Common Addition Polymers
10
Addition Polymers - Elastomers

• Isoprene
• Neoprene
• Vulcanization

11
Sample Problem
12
Condensation Polymers

• Natural ones include
• Cotton
• DNA
• Leather
• Starch

• Synthetic ones include
• Dacron
• Nylon
• Plexiglas
• Spandex

13
Polyester

• Polyester

14
Dacron
15
Polyamides

• Nylon

16
Nylon

• Versatility
• Strength

17
Sample Problems
18
More Sample Problems