Natural bio-based polymers
These polymers are synthesised by living organisms, essentially in the form in which they are finally used. Examples of naturally produced bio-based polymers include;
• polysaccharides
• cellulose / starch
• proteins
• bacterial polyhydroxyalkanoates
After extraction and purification, direct industrial exploitation is possible.

Synthetic bio-based polymers
Polymers whose monomers derive from renewable resources but which require a chemical transformation for conversion to a polymer.

Many conventional polymers can, in principle, be synthesised from renewable feedstock. For example, corn starch can be hydrolysed and used as the fermentation feedstock for bio-conversion into lactic acid from which polylactic acid, PLA, can be produced through chemical processing. Although it's orgin is renewable the polymer cannot be considered 'natural' as it is synthesised within a chemical plant.
Did you know ?
  • The world is spending 16 billion one-way plastics syringes per year.