Plastics are generally comprised of carbon, hydrogen, oxygen, etc. If the source of carbon is completely/partly from petrochemicals, then the plastic is said to be non-biodegradable. There are 100% biobased plastics like PLA, PHA as well as partially biobased plastics.
While 100% bio-based plastics are mainly used to substitute the plastics that might end up as litter (usually shopping bags, food packaging, disposables), partially bio-based plastics such as polythene manufactured from sugar cane, can provide a near-perfect substitute for oil-based equivalents in products where durability and robustness is vital.
Example – Polyethylene terephthalate (PET, known for its use in beverage bottles). Coca Cola introduced Plant Bottle technology where the PET had been made from bio-based monoethylene glycol (from sugarcane) and terephthalic acid (from petrochemicals).
|Bio-based Polyethylene terephthalate (PET)||Sugarcane||Sugar||·Fermented and distilled to ethanol
· Monoethylene glycol (MEG) from bio-ethanol
· MEG is combined with purified terephthalic acid (PTA)
|PlantBottle by Coke, Bottles.|
|Bio-based Polyethylene (PE)||Sugarcane||Sugar||· Fermented and distilled to ethanol
· Dehydrated to ethylene
|Carry bags, films and bottles|
|Bio-polycarbonate||Corn||Isosorbide||· Hydrogenation of glucose to produce sorbitol
· Isosorbide is obtained from double dehydration of sorbitol
|A substitute for high-performance glass components, electronic equipment, automotive housings, interior and exterior decor|
|Bio-Polyamide (PA 4,10/ PA 6,10)||Castor Oil||Sebacic acid||The dicarboxylic acid (sebacic acid) part of polyamide is produced from renewable resource (castor oil)||Electronics, Automotives, Sports|