Tag Archive for: bioplastics
Are bioplastics the next big thing for packaging?
Bioplastics, not to be confused with biodegradable plastics, are a relatively new field within the South African plastics industry. There are many types of bioplastic that can fulfill different applications and uses. It is important to remember that the term “bioplastics” does not necessarily mean biodegradable or compostable.
Bio-based plastics are not always biodegradable and biodegradable plastics are not always bio-based – although in many cases, they are. Bioplastics simply mean that the main source of raw material is natural and plant-based. They are not made from fossil fuels and oil, which means that bioplastics have the potential to be carbon-neutral materials.
Can bioplastics solve the problem of litter?
While the use of bioplastics won’t actually solve the problem of littering, they are better for the environment should they be discarded irresponsibly. Every single human has a responsibility to avoid littering and illegally dumping their waste. Instead, waste should always be placed in a refuse bin or in a recycling bin.
Many bioplastic products are biodegradable. If these items are dumped in the environment and if oxygen is present, they can be decomposed with microorganisms without producing harmful byproducts during the decomposition process. If no oxygen is present, then the microorganisms will produce methane gas.
The process of biodegradation often requires certain environmental conditions to be present; the right temperature, presence of oxygen and microorganisms, enough humidity, etc. Bioplastics and biodegradability should never be an excuse to litter.
It is important that people remain conscious of the impact of their waste on the environment. No matter what type of waste material – whether it is paper, glass, metal or plastic – responsible waste disposal is the first step in removing litter and pollution from the environment.
Can bioplastics be recycled?
Recycling in South Africa and around the world requires different plastic polymers to be separated from one another. Bioplastics will also have to be separated from the waste stream and recycled with their conventional counterparts. For example, bio-based PET bottles can be recycled with oil-based PET plastic.
The only snag comes with biodegradable and compostable plastics. There is currently no separate recycling stream for post-consumer biodegradable or compostable plastics in South Africa. Only the bio-based conventional materials such as bio-PET and bio-PE-HD can be processed currently. There is still much research and development that needs to be done before bioplastics become a popular packaging material.
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Plastics SA represents all sectors of the South African plastics industry. Together with our associations, we play an active role in the growth and development of the industry and strive to address plastics related issues, influence role-players and make plastics the material of choice.
Plastics SA has been mandated to ensure a vibrant and sustainable plastics industry in South Africa. The plastics sector is uniquely placed to meet the needs of a sustainable society and to deliver solutions to many challenges such as recycling, climate change, water scarcity, resource usage and energy recovery.
For more news, updates and information on the South African plastics industry, follow us on Facebook, Twitter, Instagram, YouTube, LinkedIn and Pinterest.
Bioplastics are not the same as biodegradable plastics
When it comes to plastic alternatives, there are two materials that consumers are likely to encounter; bioplastics and biodegradable plastics. These are separate products that are often confused. People think that bioplastics and biodegradable plastics are one and the same, but in reality, they are not.
Both of these materials are fairly new developments that are growing in popularity around the world, as well as in South Africa. They are both marketed as alternatives to traditional plastics and are used in similar applications. However, that is where the similarities end. The differences between bioplastics and biodegradable plastics are outlined below.
What are these materials made from?
Bioplastics are not just one single material but comprise of a whole family of materials with different properties and applications. “Bioplastics” refers to plastics made from plant or other
biological materials – it does not speak to the biodegradability or compostability of the
Product. Bioplastics are made from corn, sugar cane or starch. They have the same characteristics as oil-based plastics but are made from renewable sources.
Biodegradable plastics, on the other hand, are made from fossil fuels such as oil. In theory, they can be degraded by biological processes. However, many so-called biodegradable plastics do not decompose as intended in the natural environment. Biodegradable plastics are not always bio-based (made from plants) and bioplastics are not always biodegradable.
Why use bioplastics?
The main benefit of bioplastics is that they are made from naturally-occurring and renewable materials. They reduce our reliance on fossil fuels and oils which also helps to lower carbon emissions. Bioplastics can be made from genetically modified plants or from natural feedstock – neither of which are food sources for humans. These resources can be regrown every year, unlike oil and fossil fuels.
Another advantage of bioplastics over biodegradable plastics is that they can be recycled with conventional packaging waste. Bioplastics can be processed at a recycling facility in the same way as regular plastic, whereas biodegradable plastic must be separated from the waste stream and processed separately.
Bioplastics are perfectly suited to mechanical recycling. On the other hand, biodegradable plastics must be sent to an industrial composting facility where they can take up to three months to decompose. Manufacturing bioplastics is a fairly complicated process and quite an energy-intensive operation, but as the technology develops and further tests are completed, we could soon see plastic products being made from green resources.
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Plastics SA represents all sectors of the South African plastics industry. Together with our associations, we play an active role in the growth and development of the industry and strive to address plastics related issues, influence role-players and make plastics the material of choice.
Plastics SA has been mandated to ensure a vibrant and sustainable plastics industry in South Africa. The plastics sector is uniquely placed to meet the needs of a sustainable society and to deliver solutions to many challenges such as recycling, climate change, water scarcity, resource usage and energy recovery.
For more news, updates and information on the South African plastics industry, follow us on Facebook, Twitter, Instagram, YouTube, LinkedIn and Pinterest.