in addition to all the bio-materials mentioned in the article below, seaweed can also be used as a raw material to make biodegradable plastics ("bioplastics")

https://www.ars.usda.gov/oc/utm/repurposing-ag-waste-to-create-bioplastics/

as rightly pointed out, shelf life of the bio-polymer is the key design challenge for this still emergent material synthesis method to become a viable replacement to fossil-oil based polymers.

#materials #sustainability #plastics