Polypropylene is always cited as the polymer of future. There is
a growing demand for recycled polypropylene in various industries, according
to the latest survey conducted by the Association of Plastic Recyclers.
Recycled Polypropylene (PP)
Polypropylenes are plastics polymers that are members of the
‘polyolefin’ family. It is a highly flexible material that has many beneficial
physical properties. Most importantly, polypropylene is recyclable. In chemical
terminology, polypropylene is a linear hydrocarbon polymer with slight
unsaturation.
Properties & Applications of Polypropylene (PP)
Polypropylene can be used for various applications as it is an
exceptionally flexible material. It is extremely resistant to heat, chemicals
and exhaustion.
It has a wide range of uses, including:
Labelling
Carpet Fibres
Automotive Components
Clear film packaging
Thermal Underwear
How can we say Recycled Polypropylene has huge demand?
So, how can we say that there is a growing demand for recycled polypropylene? To simplify this question, the
international trade organization representing the plastics recycling industry
conducted a survey among 21 major consumer brand companies. They had recognized
that these companies have a huge requirement for more than 280 million pounds
of the recycled polypropylene annually.
Recycling of Polypropylene
Several factors must be taken into consideration to make
recycling of polypropylene. Majorly, the difficulty and expense of the
recycling process needs to be reduced. On the other hand, this process includes
sorting, collecting, cleaning and reprocessing.
A wide range of companies has undertaken ‘life cycle’ studies,
which provides a glance on the plastic from the raw material production to the
final stages of waste management to evaluate the sustainability of the product.
The important harmony from these studies is that polypropylene has considerable
potential as a sustainable product.
The polypropylene must be separated from any other plastic
polymers to make the recycling process possible. This can be accomplished by
sink-float separation, which works on the principle that polypropylene has a
different specific density. In practice, polypropylene is often mixed with PET
to produce plastic products such as drinks bottles.
Environmental Benefits of Recycled Polypropylene:
Recycling of polypropylene is becoming as an important and
economically viable option on a large-scale. The major benefit of Recycled
Polypropylene is the reduction in the consumption of raw, finite resources such
as propane gas and oil. There will be 88% reduction in energy usage if plastics
are produced from recycled polypropylene.
On the other hand, PP can be recycled back into many different
products, including:
Industrial fibers
Clothing fibers
Compost bins
Food containers
Speed humps
Gardening Apparatus
However, a reasonable proportion of polypropylene is recycled
from major industries, but a considerable proportion is still dumped into
landfills.
Plastics industry growth rate is rising accordingly, with
plastics consumption growing at 16% a year. Besides this, nearly 47% of
plastics are recycled in India every year. Recycled polypropylene is an
essential material with considerable opportunities in developing nations like
India. Catalyzing this particular industry can also reduce the impact on the
environment.