1.2 Characteristics of biodegradable polymers

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12 Terms

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natural bio-polymers
made from natural materials

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synthetic bio-polymers
made from renewable materials but chemically engineered to break down faster
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biodegradable polymers
made from finite resources but contain additives to degrade it faster
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cons of biopolymers
* can produce methane when decomposing (GHG)
* can take high temps to decompose (needs fuel)
* can leave behind toxic residues
* natural bio-polymers need land to grow
* they cannot be recycled, contributes to throw away culture
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pros of biopolymers
* natural bio-polymers save finite resources
* reduces landfill space and waste
* can be processed the same e.g. injection moulding or film making
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corn starch polymer
* natural (potato/corn starch)
* packaging, straws, disposable cutlery, bags
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potatopak
* natural (potato starch)
* single use items
* bin bags
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biopol
* natural additive
* made from bacteria
* added to thermoplastics
* packaging, nappies, surgical stitches, pill coverings
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polylactide acid (PLA)
* synthetic (corn kernels fermented to lactic acid)
* packaging, slow-release medication patches, films, filament for 3D printing
* synthetic (corn kernels fermented to lactic acid)
* packaging, slow-release medication patches, films, filament for 3D printing
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PHA
* natural (bacteria)
* fully compostable
* packaging, bone repair fixings, detergents sachets
* natural (bacteria)
* fully compostable 
* packaging, bone repair fixings, detergents sachets
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lactide
* synthetic (PLA and cellulose)
* fully compostable and water soluble
* packaging, bone repair fixings, detergents sachets
* synthetic (PLA and cellulose)
* fully compostable and water soluble
* packaging, bone repair fixings, detergents sachets
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glycolide
* synthetic (PLA and cellulose)
* fully compostable
* food film, packaging wrap, flower wrap, bin bags