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Biodegradable Products

Biodegradable

These bags are biodegradable on land and in water, and are designed to reduce the impact of plastic as litter. Timeframe for degradation depends upon environmental conditions and requires oxygen to be present. The degradation process can take several years. When disposed of in landfill, Eco-pal bags are unlikely to degrade – but degradation is possible. If degradation occurs it will take significantly longer than if the bag is in the open environment. If degradation occurs, it is followed by biodegradation and no harmful chemicals remain. These products are not suitable for composting

How does d2w Controlled-life Plastic work?

 

Stage 1: d2w additive is included in the basic polymer resin during the manufacturing process.

Stage 2: d2w breaks the molecular chains so that at the end of its predetermined service life the plastic starts degrading in the presence of oxygen by a process of oxidation, which is accelerated by light, heat and stress.

Stage 3: Finally bio-degradation is completed by micro-organisms.

Molecular Chain

The molecular mass of a material can be a good indication of the complexity of its molecular chains and thus resistance to oxidation.

Molecular mass is the weight of the atoms that make up an individual molecule of the material. So, for example, water is two hydrogen atoms and one oxygen atom - H2O. The atomic mass of hydrogen is 1.00784 and that of oxygen is 15.9994; therefore, the molecular mass of water with formula H2O is (2 x 1.00784) + 15.9994 = 18.01508. One molecule of water weighs 18u, but the molecular mass of a typical polyethylene is 300,000.

The d2w formulation is in the form of a metal salt. After a period of planned stability due to the anti-oxidants contained in the d2w formulation it causes a breakdown of the carbon-carbon bonds in the molecular chains - i.e. chain cleavage, or scission. The plastic product will become brittle and disintegrate into tiny flakes. As the chains continue to reduce in size, oxygen is permitted to bond with the carbon and produce CO2. The molecular mass descends to below 40,000u and at that stage, the material effectively becomes water wettable and micro-organisms can access the carbon and hydrogen.

This stage can accurately be described as bio-degradation. At this point the material is no longer a plastic but has become a material capable of bio-assimilation. 

It is well known that there is a "plastic soup" of waste floating in the Pacific Ocean which now covers an area greater than the size of Texas. If all short-life plastics had been made with d2w - this environmental menace would be very much smaller.

OXO Biodegradable Infographic