This article originally appeared on VICE Italy.While plastic has been a good friend to humanity for more than half a century, its single use variety is rapidly becoming an enemy. Plastic straws end up in sea turtles' noses, nets and bags in bellies of whales, and microplastics in soil, water and even our bodies.Reducing the production and consumption of plastic is the only way forward, so the European Parliament's vote to ban single-use plastics by 2021 is a step in the right direction. But it's not going to be easy to convince 7 billion people around the world to give up the convenience that plastic packaging affords.
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So what are the alternatives, with all the best qualities of plastic, but not that one annoying downside – that it's ruining the planet?PLA is one of the best known biodegradable polymers. It's obtained from renewable sources like corn starch, and products made of PLA can look exactly like those made of PET or PS plastic.That strong likeness could help popularise it, but as long as traditional plastics from fossil fuels are still around, it might actually be a problem. If a PLA cup is thrown in with plastic recyclables, it can contaminate the recycling process. Single-use PLA items are biodegradable and suited to industrial composting. Italian water brand Sant'Anna produces Bio Bottles made of PLA, which go into the organics bin. That in itself is great news, but the cap on the bottle is made of traditional plastic and should be thrown out separately. That's explained on the company's website, but not on the half litre bottle itself – an example of how clearer information on a label could play a vital role in the recycling process.The fact that an item is compostable doesn’t mean it’ll quickly decompose in just any environment. The process depends on temperature and environmental conditions. According to a recent study, for example, PLA immersed in room-temperature water takes over a year to decompose, while other sources claim that, in the ocean, it takes between six to 24 months. While that's a definite improvement on the hundreds of years that traditional plastic takes, you shouldn't be throwing bottles into the sea.
PLA – Polylactic acid
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As it's made from plant starch, PLA also has a low carbon footprint – the production of traditional plastic releases around four times more CO2 emissions than PLA. On top of that, PLA needs little farmland to be produced, since it has a very efficient yield. To produce 1 kg of PLA you need 1.6 kg of biomass, whereas the same amount of bio-PET – the polyethylene made out of renewable sources – requires 5 kg.Mater-Bi, a highly versatile material patented by the Italian company Novamont, is on the same wavelength as PLA. Its chemical composition is different, but it's also obtained from corn starch and plant oils, which the company says are grown in Europe and not genetically modified.Most biodegradable bags around are made of Mater-bi, and, according to Novamont, the biodegradability time of Mater-Bi plastic film is nine months in marine sediment.Mater-bi single-use biodegradable tableware exists, but hasn't taken off yet because of its relatively high cost. That isn't necessarily a bad thing – we should try to move away from using single-use items on a daily basis anyway, even if they're not terrible for the environment.You may be familiar with videos of Ooho balls – round water capsules you’re meant to gobble down in one. A research group at Imperial College London managed to find a way to wrap portions of water into an edible film made out of seaweed. The material is called Notpla, and its creators are keen to highlight its superior qualities compared to other bioplastics, including PLA. First, the brown seaweed it's made out of can grow by up to a metre per day, making it a more efficient source than crops like corn. Notpla also biodegrades in the ground in only four to six weeks, and doesn’t require industrial composting to be disposed of.
Mater-Bi
Ooho
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Nopal juice
At the moment, the cactus-polymer is not as durable as plastic, but it's very useful as disposable packaging.