POLYMERS
- Created by: ameliaxx
- Created on: 29-04-14 21:08
MAKING POLYMERS
hydrocarbons--> ONLY carbon and hydrogen atoms (joined by COVALENT bonds)
alkANES --> saturated-->only single bonds-->DOUBLE amount of carbon molecules for hydrogen
alkENES --> unsaturated-->carbon-carbon double bond--> react with bromine water-colourless
ADDITION REACTION
e.g. reaction between bromine and alkenes, bromine is decolourised because a colourless dibromo compound forms
e.g. ethene + bromine --> dimbromoethane
MONOMER AND POLYMERS
POLYMERS- plastics-->large molecules made from many smaller molecules called monomers.
alkENES can act as monomers as they have a double bond--> addition polymerisation
e.g. ethene-->polyethene
propene-->polypropene
DESIGNER POLYMERS
NYLON:
-doesnt let UV rays through
-tough
-lightweight
-waterproof
-but doesn't let water vapour pass so sweat builds up inside
GORE-TEX
-same as…
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