Discussion
Microbial plastics are made from
Answer: A
Microbial plastics are made from polyhydroxyalkanoates.
Polyhydroxyalkanoates (PHAs), such as poly-β-hydroxybutyrate, are polyesters that many bacteria accumulate as carbon and energy reserves when a nutrient other than carbon is limiting. They can be extracted and processed like conventional thermoplastics, and they are biodegradable.
Polystyrene, polyurethane and polyvinyl chloride are synthetic polymers made from petrochemical monomers by chemical polymerisation, not by microbes, and they resist biodegradation.
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