Plastic life cycle environmental impact

Beschreibung

GCSE KS4 Resistant Materials Mindmap am Plastic life cycle environmental impact, erstellt von Mike Stokes am 18/01/2017.
Mike Stokes
Mindmap von Mike Stokes, aktualisiert more than 1 year ago
Mike Stokes
Erstellt von Mike Stokes vor fast 8 Jahre
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Zusammenfassung der Ressource

Plastic life cycle environmental impact
  1. Sustainable?
    1. Yes
      1. Made from plant base starches; renewable resource.
        1. Extraction
          1. Harvest plants
            1. Plants take in carbon dioxide while they grow reducing global warming.
              1. Refining and manufacture of products
                1. Both plant-based plastic and oil based plastic require the same process to turn them into products, and require transport; if the process plant only use Green energy; energy for renewable resources like solar, wind, tidal power, this part of the process is good for the environment, but if they use coal or oil based fuels, then this is bad.
                  1. injection moulding
                    1. Blow moulding
                      1. Extrusion
                        1. Compression moulding
                          1. Vacuum forming
                            1. Product use
                              1. If the product is well designed and lasts a long time, then this is a positive, but if the product is a disposable item (water bottle) then this is bad. If the product is made from a bio-plastic then this is better for the environment.
                                1. Disposal and recycling
                                  1. If the product has been manufactured using plant based oil, and the plastic has been designed to biodegrade without affecting the environment, then this is good; some bioplastics can be recycled back to virgin monomers without degradation ready to be reused.
                                    1. If the product has been made from oil based plastic, and it is recycled then this is good because it saved resources and energy, but oil based plastic can not be broken down into monomers so the quality of the plastic reduces each time you recycle it.
                          2. Natural habitats need to be cleared to farm these mono cultures.
                    2. No
                      1. Made from oil; none renewable resource.
                        1. Extraction
                          1. Oil rigs
                            1. Natural habitat destroyed to make way for mining, toxins released into the air, oil leaks into the environment poisoning land and water, killing animal life.
                            2. Fracking
                              1. Open cast mining
                        2. Material examples
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