Product design Criteria: Biodegradable Polymers

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What are the different types of Biodegradable plastics
PHA's and PHBs, Oxo-degradable polymers, Water soluble polymers
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What are Oxo-degradable polymers, and what do the additives help?
Oxo-degradable polymers have additives to promote short degradation times of 5yrs or less, help break down into fine powder from effects of heat, oxygen, moisture and mechanical stress.
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What can you add to conventional polymers such as PP, PE, PVC PET or PS to help them breakdown?
using 'Bio-batch' additives will help to break the material down in less than 5 years.
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How are PHA's (biopol) produced?
using bacteria to aid in fermenting plant sugars. harvested from bacteria grown in cultures
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What is the most popular type of PHA and whats it used for?
PHB, used for packaging for similar to polypropylene properties.
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Name PHA's (biopol) applications
wide range applications in medicine: films, screws, boneplates and slow-release medication
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What are photo-degradeable polymers?
Break down in UV light
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Give 2 example of water-soluble polymers
liquid detergent pouches that dispense detergent when only in contact with warm water, laundry bags- clothes held by bags until placed in larger washing machine protecting hospital staff
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Which type of biodegradable polymers are used in medication?
PHS's (biopol) - slow release medication, bone plates, screws.
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Name some popular biodegradable polymer applications
Shopping bags, some soft drinks bottles, packaging, disposable pots/bows, gardening medical and sanitary
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Name a cellulose based polymer
Biopol
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Name a corn starch based polymer
PLA
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name PLA (polylactides) properties and commen applications
transparent and similar properties to polyethylene (propylene), bottles and films for carrier bags, plantpots
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Card 2

Front

What are Oxo-degradable polymers, and what do the additives help?

Back

Oxo-degradable polymers have additives to promote short degradation times of 5yrs or less, help break down into fine powder from effects of heat, oxygen, moisture and mechanical stress.

Card 3

Front

What can you add to conventional polymers such as PP, PE, PVC PET or PS to help them breakdown?

Back

Preview of the front of card 3

Card 4

Front

How are PHA's (biopol) produced?

Back

Preview of the front of card 4

Card 5

Front

What is the most popular type of PHA and whats it used for?

Back

Preview of the front of card 5
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