Objective: To explain how the structure of a polymer affects its properties.

How are plastics used? Look at the selection of things made from polymers. List each of the polymers properties and its use: e.g. Bucket: strong, hard, slightly flexible, withstand heat. Used for holding heavy objects or liquid

Properties depend on: The structure of the polymer. I.e. if it is in straight chains or branched. The conditions used for polymerisation

Different types of plastics, what would happen if they were placed into hot water? Why? – link your ideas to the diagrams below.

Carbon Based Polymers HDPE (High Density PE) ◦Bottles (biggest application) ◦milk bottles (largest bottle sector) LDPE (low Density PE) ◦Supermarket carrier bags ◦Packaging film (eg. cling film) ◦Washing up liquid bottles

Which structure is which? Why? Formulate some hypothesis

What sort of polymer? High Vs Low density Thermosetting Vs Thermosoftening Think of the properties that the polymer needs for its function and relate this to the facts we have just discussed.

What sort of polymer? High Vs Low density Thermosetting Vs Thermosoftening Think of the properties that the polymer needs for its function and relate this to the facts we have just discussed.

What sort of polymer? High Vs Low density Thermosetting Vs Thermosoftening Think of the properties that the polymer needs for its function and relate this to the facts we have just discussed.

What sort of polymer? High Vs Low density Thermosetting Vs Thermosoftening Think of the properties that the polymer needs for its function and relate this to the facts we have just discussed.

Slime Making Slime?

Past Paper Question