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Degradable Polymers - Principles and applications (Hardcover, 1995 ed.)
Loot Price: R4,321
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Degradable Polymers - Principles and applications (Hardcover, 1995 ed.)
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Few scientific developments in recent years have captured the
popular imagination like the subject of'biodegradable' plastics.
The reasons for this are complex and lie deep in the human
subconscious. Discarded plastics are an intrusion on the sea shore
and in the countryside. The fact that nature's litter abounds in
the sea and on land is acceptable because it is biodegradable -
even though it may take many years to be bioassimilated into the
ecosystem. Plastics litter is not seen to be biodegradable and is
aesthetically unacceptable because it does not blend into the
natural environment. To the environmentally aware but often
scientifically naive, biodegradation is seen to be the ecologically
acceptable solution to the problem of plastic packaging waste and
litter and some packaging manufacturers have exploited the 'green'
consumer with exaggerated claims to 'environmentally friendly'
biodegradable packaging materials. The principles underlying
environmental degradation are not understood even by some
manufacturers of 'biodegradable' materials and the claims made for
them have been categorized as 'deceptive' by USA legislative
authorities. This has set back the acceptance of plastics with
controlled biodegradability as part of the overall waste and litter
control strategy. At the opposite end of the commercial spectrum,
the polymer manufactur ing industries, through their trade
associations, have been at pains to discount the role of degradable
materials in waste and litter management. This negative campaign
has concentrated on the supposed incompatibility of degradable
plastics with aspects of waste management strategy, notably
materials recycling."
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