1. Composition of Plastics
Plastics Tech 1

2. Composition of Plastics
Lesson Essential Question:
What are plastics?

3. Raw Materials in Plastic Resins
Coal
Air
Water
Petroleum
Natural Gas
Limestone

4. Production of Plastic Resins
Chemists are responsible for producing synthetic resins
Plastic is a forced combination of molecules
Monomer - a simple molecule of synthetic resin.
Polymer – a combination of monomers to form a long chain molecule.

5. Production of Plastic Resins

6. Production of Plastic Resins
Polymerization - process of making plastic, linking of monomers to form polymers.
Homopolymerization – combining of like monomers into polymers.
Copolymerization – combining two or more different monomer units
Autoclave - a piece of equipment that applies heat and pressure to combine monomers to form polymers.

7. Production of Plastic Resins

8. Production of Plastic Resins

9. Types of Plastics
Thermoplastic – plastic which can be reprocessed or reused.
Thermosetting plastic– cannot be reused/reformed once heated.
Definition of plastics – a synthetic substance made up of a long chain of complex molecules capable of being formed or molded into any desired shape.

10. Types of Plastics

11. Types of Plastics

12. Types of Plastics

13. Plastics

14. Plastics Video Clips Polyethylene Bottles Plastic Bags
Recycling to Clothing