Biopolymers and bio plastics
#Biobased
There are several meanings for
bioplastics, but in general, a bioplastic is a plastic substance either made
from purely biological materials (known as biobased), or biodegradable, or
both. There is some controversy, as with all sustainability problems, over
which form of bioplastic is the most sustainable.
Generally though, the most
sustainable type of bioplastic is the one that is both biobased (sustainable
front end -of-pipe material author ) and biodegradable
(environmentally-friendly waste management at end-of-pipe).
Biological raw
materials are derived from biomass, such as edible corn , sugarcane, cassava,
veggie fats and crude crude oil , agricultural waste etc.
#Biomass
Biomass is renewable, because it
is of agricultural/bio-based origin. It doesn’t really matter what the flora
life source is; what is needed is the pelf from the plant.
Through the
cognitive operation of photosynthesis, every plant convert atomic number 6 from
CO2 in the standard pressure () as it grows, into materials such as lignin,
cellulosic , and simple or complex sugars (e.g. starch ). While the
manufacturing physical process for bio-based plastics may differ slightly from
one to another manufacturer – mainly in coition to the biomass source - but the
science is similar.
For example, NatureWorks LLC garden truck its
PLA bioplastics, branded as ‘Ingeo’, from dextrose, a sugar derived from the
starch in corn that has been grown for many industrial and functional covering
. In production , the sugar is converted by microorganisms through fermentation
into lactic acid.
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