BIO Plastic.. an alternative to current plastic…. It’s a nascent initiative to create a world which will be eco friendly………. GO GREEN !!. BIOPLASTICS or organic plastics are a form of plastics derived
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to current plastic….
It’s a nascent initiative to create a world
which will be eco friendly………
organic plasticsare a
form of plastics derived
from renewable biomass sources, such as vegetable oil, corn starch, pea starch, or Microbiota, rather than fossil-fuel plastics which are derived from petroleum.
Biodegradable plastics combine the utility of plastics (lightweight, resistance, relative low cost) with the ability to completely and fully biodegrade.What are BIOPLASTICS ?
The different types of bio plastics include –
( PHA’s )
( PHB’s )
Flexibiliser and plasticizer such as sorbitol and glycerin are added to the starch. By varying the amounts of these additives, the characteristic of the material can be tailored to specific needs (also called "thermo-plastical starch").Starch based BIOPLASTICS
This is branched. When starch is dried from an aqueous solution it forms a film due to hydrogen bonding between the chains. However, the AMYLOPECTINinhibits the formation of the film, as it makes the plastic brittle. Reacting the starch with a chemical like vinegar breaks down the amylopectin, giving strenght to our plastic.Polymers in Starch
Varying the quantity of vinegar accordingly can give different properties to the plastic
then the plastic obtained would
be hard and stiff.
used, then the plastic obtained
would be tensile and flexible.
widely used for disposable
items, such as packaging and
used for organic waste bags,
where they can be composted
together with the food or
Bioplastics can ensure a greener and sustainable future as it -
Bioplastic, easily degrades when
discarded, thus reducing tons of
petroplastic that cannot degrade.
The biggest advantage of bioplastic is that these plastics are made from renewable sources. Unlike fossil fuels including oil, these resources will not be depleted within a century.
Bioplastics do not have any
chemicals or toxins. This plastic
harmlessly breaks down and
gets absorbed into the earth.
When bioplastics degrade, there are very few greenhouse gas and harmful carbon emissions. Bioplastics represent a
42% reduction in carbon footprint.
Producing bioplastics uses 65% less energy than it takes to produce petroleum-based plastics, making bioplastics the energy-efficient choice.
Bioplastics are created from
fully biodegradable materials.
Thus, recycling them takes
much less energy.
Despite that this plastic is eco - friendly, its has not become popular in its use mainly because -
Bio plastics do not have a long life as they degrade very quickly. Thus, the conventional plastics are preferred more because of their excellent durability and long life.
It is also possible that bacteria will eventually evolve the ability to degrade synthetic plastics as well.
Bio plastic production cannot be increased unless there is a pressure on the food system. Most of the corn that was used for human consumption is now being used for making bioplastic. Thus, there is a future possibility of food shortage. It has drawn attention to the importance of using non-edible plant resources to produce bio plastics.
The mechanical strength of starch based bio plastics is poor as compared to regular plastic.