Katerina Swanson
Bioplastics are a promising alternative to fossil fuel-based plastics. They are made from biomass, such as corn, sugarcane or avocado, and can reduce climate emissions by using carbon from the atmosphere rather than fossil fuels. However, bioplastics are not a flawless substitute for conventional plastics and require more research, investment and adoption to become a transformative solution.
| Characteristics | Values |
|---|---|
| Current global plastic production | 365 million metric tons per year |
| Percentage of plastic that could be derived from plants | 90% |
| Carbon source for bioplastics | Biomass |
| Carbon source for fossil fuel-based plastics | Fossil fuels |
| Climate emissions from bioplastics | Lower than fossil fuel-based plastics |
| Ease of separation from other waste | Difficult |
| Compostability | Possible |
| Current global bioplastic production capability | 26.5% |
| Bioplastics as a transformative solution | More research, development, investment, and adoption are required |
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What You'll Learn
The advantages of bioplastics
Bioplastics are a promising alternative to fossil fuel-based plastics. They are made from biomass, such as corn, sugarcane, and avocado, and can be used to replace conventional plastics made from petroleum. One of the main advantages of bioplastics is that they reduce climate emissions by using carbon from the atmosphere rather than from fossil fuels. This can help to keep climate impacts low and reduce our dependence on fossil fuels.
Another advantage of bioplastics is that they often have lower emissions and sometimes biodegrade. This means that they have the potential to reduce waste by composting products at the end of their life. For example, biopolymer producer Braskem has developed the first bio-based polypropylene with a negative carbon footprint.
Bioplastics also offer increased alternative options to traditional plastics and make sustainable products more readily available for plastics manufacturers. According to Project Drawdown, 90% of current plastics could be derived from plants instead of fossil fuels. This would significantly reduce the amount of plastic produced from fossil fuels, which currently stands at almost 100%.
However, it is important to note that bioplastics are not a flawless eco-friendly substitute for conventional plastics. Each type of bioplastic needs to be treated differently after use; otherwise, they can add to the plastic pollution problem. More research, development, investment, and adoption are required for bioplastics to become a truly transformative solution.
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The disadvantages of bioplastics
Bioplastics are an alternative to fossil fuel-based plastics, but they have some disadvantages. Firstly, the current technological costs of producing bioplastics are significantly higher than for synthetic plastics. The bioplastics industry is still in its infancy and has higher fixed costs per unit. As a new industry, bioplastics need public support or intervention to protect them from competition with synthetic plastics.
Another disadvantage of bioplastics is the potential for deforestation. The sourcing of organic materials through the free international market could worsen global deforestation and may indirectly affect the price of food products. To address this issue, the origin and characteristics of organic materials should be regulated to minimise environmental and economic consequences.
In addition, the large-scale production of bioplastics is limited by concerns over functionality. Different biopolymers have disadvantages such as high-water vapour permeability, oxygen permeability, fragility, low thermal resistance, low mechanical properties, vulnerability to degradation, and low processability.
Finally, the production of bioplastics from polysaccharides has disadvantages related to mechanical resistance, gas barrier properties, processability of natural polymers, and economic viability.
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The environmental impact of bioplastics
Bioplastics are a promising replacement for fossil fuel-based polymers, but they are not a flawless eco-friendly substitute. Substituting bioplastics for conventional plastics reduces climate emissions because they use carbon from the atmosphere rather than fossil fuels. However, for bioplastics to be more sustainable than conventional plastics, they need to be separated from other waste and processed appropriately.
Bioplastics are made from biomass, with plants as an alternative source of carbon. They often have lower emissions and sometimes biodegrade. However, each type of bioplastic needs to be treated differently after use. If not treated properly, bioplastics simply add to the plastic pollution problem.
Bioplastics have the potential to reduce waste by composting products at the end of their life. For example, biopolymer producer Braskem has invested in developing the first bio-based polypropylene (PP) with a negative carbon footprint. Innovations in bioplastics will increase alternative options to traditional plastics and make sustainable products more readily available for plastics manufacturers.
The EU has adopted a policy framework to bring awareness to the sourcing, labelling and use of bioplastics. The policy educates consumers and companies about bioplastics, which currently possess 26.5% of the world's bioplastic production capability.
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The future of bioplastics
Bioplastics are a promising alternative to fossil fuel-based plastics, with the potential to reduce our dependence on fossil fuels and lower emissions. However, no bioplastic is a flawless substitute for conventional plastic, and each type of bioplastic needs to be treated differently after use to avoid adding to the plastic pollution problem.
Bioplastics are made from biomass, with plants acting as an alternative source of carbon. Experts estimate that 90% of current plastics could be derived from plants instead of fossil fuels. Substituting bioplastics for conventional plastics reduces climate emissions because it uses carbon from the atmosphere rather than fossil fuels. For example, 1 metric ton of bioplastics produces 0.828 metric tons of carbon dioxide, compared to 2.4 metric tons for traditional plastics.
Bioplastics are a sustainable alternative to traditional plastics, with the potential to reduce waste by composting products at the end of their life. However, for bioplastics to be more sustainable than conventional plastics, we need to be able to separate them from other waste and process them appropriately.
To fully realise the potential of bioplastics, more research and development, investment, and adoption are required. Governments play a crucial role in this transition by investing in bioplastic development and implementing policies to raise awareness about the sourcing, labeling, and use of bioplastics. For instance, the EU has adopted a policy framework to educate consumers and companies about bioplastics, which currently possesses 26.5% of the world's bioplastic production capability.
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The investment in bioplastics
Bioplastics are a promising replacement for fossil fuel-based polymers. However, more research and development, investment, and adoption are required for bioplastics to become a transformative solution.
Bioplastics (also referred to as biopolymers) are plastic materials made from biomass. They are a sustainable alternative to traditional plastics made from petroleum. Substituting bioplastics for conventional plastics reduces climate emissions because it uses carbon from the atmosphere rather than from fossil fuels, keeping climate impacts low.
Bioplastics are not a flawless eco-friendly substitute for conventional plastic, and each type of bioplastic needs to be treated differently after use. Otherwise, they simply add to the plastic pollution problem.
Biomanufacturing companies have requested more federal investment to meet the goal of replacing fossil fuel-based plastics with bioplastics. If governments invest in bioplastic development, plastics companies could more easily scale adoption in their supply chain. In Europe, for example, the EU has adopted a policy framework to bring awareness to the sourcing, labeling and use of bioplastics. The policy is not legally binding but does educate consumers and companies about bioplastics in the EU, which currently possesses 26.5% of the world’s bioplastic production capability.
Researchers and developers are constantly working to find more viable biomass sources with similar properties to fossil fuels. For example, biopolymer producer Braskem has invested in developing the first bio-based polypropylene (PP) with a negative carbon footprint. Innovations in bioplastics will increase alternative options to traditional plastics and make sustainable products more readily available for plastics manufacturers.
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Frequently asked questions
Yes, bioplastics can replace fossil fuel-based plastics. However, for bioplastics to be more sustainable than conventional plastics, they need to be separated from other waste and processed appropriately.
Bioplastics have a decreased dependence on fossil fuels and the potential to reduce waste by composting products at the end of their life. They also have lower emissions and sometimes biodegrade.
Bioplastics are made from biomass, using plants as an alternative source of carbon. Examples of biomass include corn, sugarcane and avocado.
