Plastics that safely degrade/biodegrade
Since petroleum-based plastics can have life spans that run into millennia, I think we will see a preference for degradable and biodegradable products that don’t add to the billions of tons of waste plastic already in existence.
You might ask why we can’t just recycle all that plastic. The answer is that we can, but the levels of participation in recycling are still very low.
Let’s take plastic bags for example. The Worldwatch Institute reports that each year Americans “throw away” about 100 billion plastic bags; only 0.6 percent is recycled.
Since it’s usually easier to change a product than it is to change behaviors, attention has turned to degradable and biodegradable plastics, which can degrade in as little as 10 years or less, breaking down into substances that are more earth-friendly than standard plastics.
However, there are some concerns about the risks of corn-based plastics emitting methane as they biodegrade. Additionally, if people throw biodegradable plastics in the same bin with petroleum-based plastics, the recycling of the petroleum-based plastic can become contaminated.
To address these issues, there is a new plastic called Oxo-biodegradable, which can be safely added to standard plastic recycling streams without contaminating them, provided it is not already in an advanced degraded state. It is “degradable,” meaning it doesn’t need microorganisms to begin degrading, as would be necessary for “biodegradable” products.
Heat and sunlight are the prime elements needed to trigger the degrading process. Though not required, the presence of microorganisms speeds the process.
Oxo-biodegradable material does not emit methane in landfills and only takes about two years to degrade. I just used this material for a client bag order and there is little difference in look and handling between the Oxo-biodegradable and standard petroleum-based plastics.
I think we will also see the development of even more degradable plastic-like substances over time.
via What’s on the horizon for eco-friendly products?.