Biopolymers and Bio-Plastics
Bio-polymers are polymers produced by living organisms; in alternative words, they are compound biomolecules. Bio-polymers provide an alternative to oil based plastics, as they are made up off plants, usually polymers of starch or polylactic acid (PLA). They are presently used for luggage bags, cutlery and plates, pens, clothing, credit cards, food packaging, agricultural films, teabags, occasional filters, diapers and napkins. Bio-plastics are plastics derived from renewable biomass sources, like vegetable fats and oils, corn starch, straw, woodchips, food waste, etc. Bio-plastics are not free of environmental impact, and the carbon emissions related to growing crops and changing these into the specified chemicals has to be taken into consideration.
There are four main kinds of bio-polymer based respectively on:
· Synthetic materials