POLYMERS

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  • 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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