Inspiration Rainwhich will be eco friendly………
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organic plastics are 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.
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Starch Based Plastics
Starch based BIOPLASTICS
Among the different types of biodegradable plastics, Starch based plastics constitute about 50% of the bioplastics market. Thermoplastic starch, such as Plastarch Material, currently represents the most important and widely used bioplastic.
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").
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Ingredients
CORNFLOUR, WATER ,
of the Bioplastic.
Basically, Starch is made of long chains of glucose molecules joined together.
Strictly, it contains two polymers:
AMYLOSE and AMYLOPECTIN
polymer. This is a very useful
polymer as it would give strength
to the plastic.
AMYLOPECTIN
This is branched. When starch is dried from an aqueous solution it forms a film due to hydrogen bonding between the chains. However, the AMYLOPECTIN inhibits 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.
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Giving different properties
Varying the quantity of vinegar accordingly can give different properties to the plastic
if less amount of vinegar is used,
then the plastic obtained would
be hard and stiff.
used, then the plastic obtained
would be tensile and flexible.
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applications
catering items.
green waste.
Bioplastics can ensure a greener and sustainable future as it -
Takes Less Time to Break Down
Bioplastic, easily degrades when
petroplastic that cannot degrade.
Renewable
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.
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Benefits
harmlessly breaks down and
Reduces CO2 Emissions
When bioplastics degrade, there are very few greenhouse gas and harmful carbon emissions. Bioplastics represent a
42% reduction in carbon footprint.
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Benefits
Cost Effective and Energy Efficient
Producing bioplastics uses 65% less energy than it takes to produce petroleum-based plastics, making bioplastics the energy-efficient choice.
Easier to Recycle
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Drawbacks
Despite that this plastic is eco - friendly, its has not become popular in its use mainly because -
Limited Shelf Life
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.
Development of Plastic Consuming Bacteria
It is also possible that bacteria will eventually evolve the ability to degrade synthetic plastics as well.
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Drawbacks
Food Shortage
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.
Low Mechanical Strength
The mechanical strength of starch based bio plastics is poor as compared to regular plastic.
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Thank
You !!