617327
Descrição
Mapa Mental por Chris Osmundse, atualizado more than 1 year ago
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Criado por Chris Osmundse
mais de 10 anos atrás
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OCR AS Chemistry - Polymers
- Polypropylene
- Resistant to
chemical attack
- Uses
- Containers that are
dishwasher safe
- Food packaging
- Fibre in carpets
- Ropes
- Containers that are
dishwasher safe
- Resistant to
chemical attack
- Polythene
- Most used plastic
- Uses
- Shampoo bottles
- Plastic Bags
- Toys
- Shampoo bottles
- Most used plastic
- Polyphenylethene
- Cheap
- Uses
- Insulation
- Model making in food
industry
- Foam packaging
- Insulation
- Cheap
- Polymer waste
- Represent 10% of
municipial waste
- Non-biodegradable plastics is
a major reason why plastics
need to be recycled
- Recycling Polymers
- For every tonne of plastic
recycled,about 1.8 tonnes
of oil is saved
- Recyling started in
early 1980s
- Recyling involves two stages
- Sorting
- The Polymer identification
codes are used to seperate
the plastics
- If PVC is not separated effectively
from PET it undermines the recycling
process. PVC is also known to
release poisonous dioxins when
heated
- The Polymer identification
codes are used to seperate
the plastics
- Reclamation
- Chopped into small flakes before
washing to remove impurities
- Waste is then
made into new
material by melting
the pellets and
remoudling
- Chopped into small flakes before
washing to remove impurities
- Sorting
- Recycling PVC
- Problematic
- High chlorine content
- High chlorine content
- Incineration prevents
PVC going into
landfill sites
- May cause corrosion to the plant itself
- Acidic hydrogen
chloride fumes are
frequently detected
- May cause corrosion to the plant itself
- First commercial PVC recycling plant
- PVC separated from
other scrap by
dissolving in solvents
- Solvent is recovered and
used again
- Solvent is recovered and
used again
- PVC separated from
other scrap by
dissolving in solvents
- Problematic
- For every tonne of plastic
recycled,about 1.8 tonnes
of oil is saved
- Recycling Polymers
- Represent 10% of
municipial waste
- As a fuel source
- Produced heat energy if burned
- Used for electricity
- Used for electricity
- Produced heat energy if burned
- Biodegradable and compostable polymer
- Bioplastics
- Compostable
- Biodegradable
- Derived from raw materials
- Starch
- Maize
- Cellulose
- Lactic Acid
- Starch
- Manufactured by non hazardous processes
- Bioplastics degrade
naturally in the
enviroment
- Compostable
- Bioplastics
- Polymer Identification codes
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