COMPOSTABLE PHA- polyhydroxyalkanoate (biopol): Biodegradable polymers that are produced by using bacteria to aid the fermenting plant sugers. They also break down when bacteria attacks the polymer.
properties: packaging for food and beauty, Medical fixtures like dissolvable fixatives films, screws, bone plates. slow release medication in capsules
one of the most common types from this family is called PHB - polyhdroxbutrate
properties: similar to PP
COMPOSTABLE PLA- polyactides:
- cellulose (made from plants)/ corn starch based polymers
- similar properties to polyethylene & PP, behaves like a thermoplastic.Can be tranperant and coloured.
- products: packaging, bottles, films carrier bags, gerdening product.
- medical: implants, sutures becuase it can dissolve over time, medicine capsules
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