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Organic Chemistry
POLYMERS
Polymer
Poly = many
Mer = units
• Polymers are large molecules that has many units bonded together
• The individual units made up the polymer are called monomers
Natural Polymers
Amylose (in starch) DNA
Natural Polymers (Cont’d)
Protein
Man-made or Synthetic Polymers
Type 1: Addition polymers
• Made by addition reaction of monomers that have double bonds or triple bonds
Properties of Addition Polymers
• Stable as the double bond converted to single bond
• Flexible, stretchable and mouldable thanks to lots of weak, intermolecular forces that hold the long polymer chain together
Plastic bag- How it’s made??? Made from a polymer
called polyethylene
• Take 1 million years to break down/ degrade a plastic bag
Another Man-made Addition Polymer
• The super absorbent polymer is Polyacrylic acid
Super absorbent Polymer (Cont)
•H1. absorb up to 1,000 g of water per gram of polymer
Applications of Nylon• Invented by Dupont• Nylon stands for New York & London• Tear resistant• Water-proofUsed in making:• parachutes• stocking• sleeping bags• tent, sail• cooking utensils
Silicone as polymer
Silicone based baking pan
Silicone breast implant
Traditional metal baking pan
Silicone structure
POLYMER TIME! Making slime•Pour Elmer Glue to the mark in a plastic cup•Add equal volume of water to dissolve the glue•Add desire food colorant•Stir •Add prepared Borax solution DROPWISE until the slime is somewhat thicken•Don’t add too much Borax
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