polymers. polymer poly = many mer = units polymers are large molecules that has many units bonded...

15
POLYMERS

Upload: erica-anthony

Post on 24-Dec-2015

217 views

Category:

Documents


0 download

TRANSCRIPT

Page 1: POLYMERS. POLYMER Poly = many Mer = units Polymers are large molecules that has many units bonded together The individual units made up the polymer are

POLYMERS

Page 2: POLYMERS. POLYMER Poly = many Mer = units Polymers are large molecules that has many units bonded together The individual units made up the polymer are

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

Page 3: POLYMERS. POLYMER Poly = many Mer = units Polymers are large molecules that has many units bonded together The individual units made up the polymer are

Natural Polymers

Amylose (in starch) DNA

Page 4: POLYMERS. POLYMER Poly = many Mer = units Polymers are large molecules that has many units bonded together The individual units made up the polymer are

Natural Polymers (Cont’d)

Protein

Page 5: POLYMERS. POLYMER Poly = many Mer = units Polymers are large molecules that has many units bonded together The individual units made up the polymer are

Types of Synthetic Polymers

• Addition polymer: monomers with double bonds are joined together through addition

• Examples:

• polyethene; plastic bags, plastic water bottles, tys

• polystyrene; styrene and Styrofoam cups, insulation, packaging

• polyvinylchloride (PVC, vinyl); building construction materials, sewage pipes, medical equipment

Page 6: POLYMERS. POLYMER Poly = many Mer = units Polymers are large molecules that has many units bonded together The individual units made up the polymer are

• Condensation polymer: monomers are joined by formation of esters or amide

• Need a carboxylic acid or a diamide

• Examples:

• Nylon – tires, synthetic fibres used to make rope and clothing

• Polyester (DacronTM) – fibres used to make fabric for clothing and surgery

Page 7: POLYMERS. POLYMER Poly = many Mer = units Polymers are large molecules that has many units bonded together The individual units made up the polymer are

Type 1: Addition polymers

• Made by addition reaction of monomers that have double bonds or triple bonds

Page 8: POLYMERS. POLYMER Poly = many Mer = units Polymers are large molecules that has many units bonded together The individual units made up the polymer are

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

Page 9: POLYMERS. POLYMER Poly = many Mer = units Polymers are large molecules that has many units bonded together The individual units made up the polymer are

Plastic bag- How it’s made???

• Made from a polymer

• Polyethylene

• Take 1 million years to break down/ degrade a plastic bag

Page 10: POLYMERS. POLYMER Poly = many Mer = units Polymers are large molecules that has many units bonded together The individual units made up the polymer are

Another Man-made Addition Polymer

• The super absorbent polymer is Polyacrylic acid

Page 11: POLYMERS. POLYMER Poly = many Mer = units Polymers are large molecules that has many units bonded together The individual units made up the polymer are

Super absorbent Polymer (Cont)

• Absorb up to 1,000 g of water per gram of polymer

Page 12: POLYMERS. POLYMER Poly = many Mer = units Polymers are large molecules that has many units bonded together The individual units made up the polymer are

Applications of Nylon• Invented by Dupont

• Nylon stands for New York

& London

• Tear resistant

• Water-proof

Used in making:

• parachutes

• stocking

• sleeping bags

• tent, sail

• cooking utensils

Page 13: POLYMERS. POLYMER Poly = many Mer = units Polymers are large molecules that has many units bonded together The individual units made up the polymer are

Silicone as polymer

Silicone based baking pan

Silicone breast implant

Traditional metal baking pan

Silicone structure

Page 14: POLYMERS. POLYMER Poly = many Mer = units Polymers are large molecules that has many units bonded together The individual units made up the polymer are

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

Page 15: POLYMERS. POLYMER Poly = many Mer = units Polymers are large molecules that has many units bonded together The individual units made up the polymer are