Question

Is Buna-N biodegradable or non-biodegradable?

Answer 1

Hint:
Polymers are substances composed of one or more very large molecules, called macromolecules, which are multiples of simpler chemical units. There are two types of polymers based on their degradability biodegradable and non-biodegradable. A biodegradable polymer breaks down under aerobic or anaerobic conditions, as a result of the action of microorganisms or enzymes. The non-biodegradable polymers are those that cannot be degraded or disassembled by natural processes after thousands of years.

Complete step by step answer:
Buna-N also known as nitrile rubber is a synthetic rubber derived from butadiene and acrylonitrile. Buna-N is used in the aeronautical and automotive industries to produce oil and fuel handling hoses, grommets, seals, and self-sealing fuel tanks. It is utilized in the nuclear industry to make protective gloves. The Buna-N material is resistant to oil, fuel, and other chemicals; the more Buna-N you use, the greater the oil resistance, but the less flexible it is.
They are made up of long chains of hydrogen and carbon atoms. Molecular bonds formed between these molecules are adamant, which means microbes find it difficult to break the bonds and digest them. Thus more time is needed to decompose them.
So Buna-N is non-biodegradable.

Additional Information:
The raw material of Buna-N is normally yellow, but it can also be red-tinted or orange, depending on the manufactory. It is resistant to vegetable oils, mineral oils, benzene/petrol, alkalis, or diluted acids.

Note:
It may be attacked by ketones, ozone, aldehydes, and esters. It is poorly resistant to sunlight, weathering, and ozone as the double bond lies between the polybutadiene parts of the chemical backbone. So, it should not be kept near UV light, ozone-generating electric motors, or welding equipment.