plastics plastics bags advantages disadvantages case on plastic bags from fish body mosquitoes in plastic bags microplastics

1. Case study on
Characterizing
compounds
released from single
use plastic bags
Grinty Babu
TTGI170306

2. PLASTICS
 Plastic is material consisting of any of a wide range
of synthetic or semi-synthetic organic compounds that
are malleable and so can be molded into solid objects.
 Plastics are typically organic polymers of high molecular
mass and often contain other substances. They are usually
synthetic, most commonly derived from petrochemicals,
however, an array of variants are made from renewable
materials such as polylactic acid from corn or cellulosic from
cotton linters.
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3. PLASTICS
Due to their low cost, ease of manufacture, versatility, and
imperviousness to water, plastics are used in a multitude of
products of different scale, including paper clips and
spacecraft. They have prevailed over traditional materials,
such as wood, stone, horn and bone, leather, metal, glass,
and ceramic, in some products previously left to natural
materials.
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4. “There is no such thing as
‘AWAY’
When we throw away it must go
somewhere…”
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5. Advantages
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× Odorless & light in weight.
× Easily molded and have excellent finishing.
× Very good strength and toughness.
× Good shock absorption capacity.
× Corrosion resistant and chemically inert.
× Low thermal expansion of co-efficient and possess good
thermal and electrical insulating property.
× Very good water resistant and possess good adhesiveness.
× Strong, good and cheap to produce.
× Plastic bottles can be reused and restored over again and
again.

7. Disadvantages
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8.  Plastic is a nonrenewable resources.
 Plastic is softness.
 Causes CANCER
 Are embrittlement at low temperature.
 Deformation under load.
 Low heat resistant and poor ductility.
 Combustibility.
 Produces toxic fumes when it is burnt
 It is a recycle process, but it is very costly.
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9. Mosquitoes
eating micro
plastics raise
fears of pollution
harming birds
and bats!!!
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10. 10,000,000
tons of plastic are dumped in the sea every year.
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 Microplastics have been found everywhere from Arctic
sea ice to German farmland, and a new study has
revealed these tiny pollutants could even have entered
the skies.
 Researchers found that when mosquito larvae living in
ponds eat tiny shards of plastic, the fragments stay in
their bodies until they have matured into winged adults.
 With mosquitoes featuring prominently on the menus of
birds, bats and larger insects, this raises concerns about
plastic finding its way into the aerial food.
 While whales choking on large chunks of plastic are the
most obvious victims, close examination has found that
the likes of plankton, mussels and fish are consuming
large volumes of microscopic microplastics.

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North
Atlantic
ocean
South
Atlantic
ocean
Indian
ocean
Artic ocean

14. × The problem of plastic ingestion may not be confined to
underwater creatures.
× It suddenly occurred that mosquitoes, although they live in
freshwater, are very different to the other creatures that
have been studied so far in that they have a life stage that
leaves the water.
× Previous research shows that mosquito larvae – tube-
shaped creatures that live at the water surface and filter
out particles to eat – are capable of eating small pieces of
plastic.
× But no one had ever checked to see if these fragments are
retained as the larvae transition through their life cycle
before emerging as fully developed adults.
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16. “If mosquitoes eat plastics, does
that mean that the plastics are
leaving the water and polluting
a new environment?”
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17. × Microplastic research is still in its infancy, and having proved
that plastic could be transferred this way inside insects kept
in a lab, the researchers now want to determine how big a
problem this is in the real world.
× In study focused on mosquitoes, it could apply to any flying
insects that have underwater life cycle stages – meaning
plastic contamination could be rife in airborne animals.
× “This is just a proof of concept, but we know those plastics are
in the environment in very large numbers – there are some
lakes that have got vast numbers of plastics in them,” said Dr.
Callaghan.
× “They are going to be full of insects that will eat them. There’s
no doubt this is going to happen in the wild.”
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18. 2.5 billion
Metric tons of solid waste is produced all around the world.
100
Metric tons is coastal solid waste.
275 millionMetric tons is plastic waste.
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8 million
Metric tons of plastic goes into
the ocean every year.

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20. References
https://www.independent.co.uk/environment/mosqu
itoes-plastic-pollution-microplastics-birds-bats-
swallows-a8543151.html
https://www.google.co.in/search?q=case+study+on+
characteising+compounds+released+from+single+us
ed+plastic+bags&oq=case+study+on+characteising+
compounds+released+from+single+used+plastic+ba
gs&aqs=chrome..69i57.13489j0j7&sourceid=chrome
&ie=UTF-8
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21. Thanks!
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