Bio-based and Recycled Polymers: How They Are Transforming the Plastics and Rubber Industry in 2024

Photo: Marc Newberry / Unsplash

The production of plastics and rubber is undergoing a fundamental transformation driven by growing pressure for sustainability and reducing carbon footprints. Biobased polymers, produced from renewable sources such as plant oils, starches, or lignin, offer an alternative to traditional petroleum-based raw materials. At the same time, recycling technologies are improving, enabling the processing of post-industrial and post-consumer waste into high-quality polymers. These trends not only meet regulatory requirements such as REACH or the EU Directive on Single-Use Plastics but also open new opportunities for manufacturers seeking to enhance the competitiveness of their products. Which specific materials and technologies are gaining traction, and how can they be effectively integrated into production processes?

Why Biobased and Recycled Polymers Are Gaining Importance

In 2024, the plastics and rubber industry finds itself at the crossroads of ecological demands and economic efficiency. Biobased polymers, produced from renewable raw materials such as vegetable oils, starches, or cellulose, represent a key alternative to traditional fossil-based plastics. Their main advantage is the reduction of carbon footprint – studies show that CO₂ emissions can decrease by up to 50% compared to conventional polymers. At the same time, their technical performance is improving: modern biobased polyamides or polyurethanes achieve comparable mechanical properties to their petrochemical counterparts, expanding their use in the automotive industry, packaging technology, or electronics.

Recycled polymers, particularly those from mechanical or chemical recycling, play an equally important role. Legislative pressures, such as the EU regulation on packaging and packaging waste, are forcing manufacturers to increase the proportion of recycled material in products – often to levels of 30–50% by 2030. Technological advancements enable the processing of even contaminated or mixed plastic waste, which was previously considered non-recyclable. The result is polymers certified under REACH and CLP, suitable for demanding applications such as food packaging or medical devices.

Technological innovations driving the potential of biobased materials

The development of biobased polymers in recent years has focused on improving their thermal stability, moisture resistance, and processability. For example, polyethylene furanoate (PEF), produced from fructose, offers 10–15 °C higher temperature resistance than conventional PET and better barrier properties against oxygen and carbon dioxide. This makes it an ideal candidate for beverage bottles or packaging for sensitive foods. Another area of progress is biobased elastomers, which are finding applications in tires or seals, where they replace synthetic rubber with comparable elasticity and abrasion resistance.

A key role is also played by the modification of polymers using additives. Biobased plasticizers, stabilizers, or fillers based on lignin or cellulose improve mechanical properties and extend the service life of products. For example, lignin, a by-product of the paper industry, is used as a reinforcing filler in composites, thereby reducing weight and increasing material stiffness. These innovations enable biobased polymers to compete with conventional plastics even in demanding industrial applications, such as machine components or construction materials.

Photo: Killari Hotaru / Unsplash

Recycled Polymers: From Waste to High-Quality Raw Materials

Mechanical recycling remains the most widespread method for processing plastic waste, but its limitations – such as polymer degradation or limited purity – are driving the development of more advanced technologies. Chemical recycling, particularly pyrolysis or solvolysis, enables polymers to be broken down back into monomers, which can then be repolymerized without loss of quality. This process is particularly suitable for mixed plastics or materials with a high degree of contamination that cannot be mechanically recycled. The resulting polymers meet purity and safety requirements even for food contact, opening the door to their use in the packaging industry.

Another trend is closed-loop recycling, where manufacturers collaborate directly with recycling companies to take back and process their products. An example is the automotive industry, where recycled polypropylene or polyamide components are reused in vehicle interiors. This approach not only reduces raw material costs but also minimizes waste volumes. However, successful implementation requires the standardization of processes and certification of recycled materials according to applicable standards to ensure their consistent quality and safety.

Challenges and the Future of Bio-Based and Recycled Polymers in Industry

Although bio-based and recycled polymers offer numerous advantages, their broader adoption still faces several obstacles. One of the main challenges is cost – bio-based materials are often 20–50% more expensive than conventional plastics, which deters especially small and medium-sized manufacturers. While recycled polymers can be cost-competitive, their quality and availability depend on the efficiency of waste collection and sorting. Another challenge is the lack of standardization and certification, which complicates the selection of suitable materials for specific applications.

The future of these materials, however, looks promising. It is expected that by 2030, the share of biobased polymers in the plastics market will increase from the current 1–2% to 10–15%, while recycled polymers could account for up to 30% of the total plastics consumption in the EU. Collaboration between manufacturers, recycling companies, and research institutions will play a key role in developing new technologies and optimizing existing processes. For the plastics and rubber industry, this means not only environmental but also economic benefits – reducing dependence on fossil raw materials and increasing resilience to price fluctuations in the oil market.

Photo: Nareeta Martin / Unsplash

Key applications of biobased polymers in the plastics and rubber industry

Biobased polymers are finding applications across a wide range of industrial sectors, where they replace traditional fossil-based materials. In the packaging industry, biodegradable films based on polylactic acid (PLA) or polyhydroxyalkanoates (PHA) are increasingly used, offering comparable mechanical properties to polyethylene but with a significantly lower carbon footprint. In the automotive sector, biobased polyamides and polyurethanes are utilized for the production of interior components, reducing vehicle weight and improving recyclability. Significant progress is also being made in additives for rubber compounds, where natural plasticizers and fillers based on lignin or cellulose enhance the ecological profile of tires and technical rubber products.

In the field of construction materials, biobased polymers are gaining ground as binders in composites, insulation materials, or coatings. For example, epoxy resins based on vegetable oils exhibit comparable chemical resistance to their petrochemical counterparts but with better environmental parameters. In electrical engineering, biobased polyesters and polycarbonates are being tested for the production of housings and insulating components, combining good dielectric properties with thermal stability. A growing trend is the use of biobased polymers in 3D printing, enabling the production of complex parts with lower energy requirements.

How Chemical Recycling Is Transforming the Economics of Recycled Polymers

Chemical recycling represents a breakthrough technology that enables the conversion of plastic waste back into basic monomers or raw materials for the production of new polymers. Unlike mechanical recycling, which is limited by the quality of the input material, chemical processes can handle even heavily contaminated or mixed plastic waste. Pyrolysis, solvolysis, or hydrogenation break down polymers at the molecular level, producing raw materials of a quality comparable to virgin materials. This paves the way for a closed-loop production cycle, where recycled polymers can repeatedly serve in highly demanding applications such as food packaging or medical devices.

The economic potential of chemical recycling lies in lower raw material costs and reduced dependence on fossil resources. According to estimates, chemical recycling could cover up to 20% of global plastic demand by 2030. Challenges remain in the energy intensity of processes and the optimization of catalysts for higher yields. In practice, hybrid systems are already being used today, where mechanical recycling processes clean waste streams and chemical recycling focuses on problematic fractions. This approach maximizes the utilization of waste materials and minimizes the amount of landfilled waste.

Regulatory Pressure and Certification as Market Drivers

The European Union and other global regions are introducing increasingly stringent regulations that promote the use of bio-based and recycled polymers. The Single-Use Plastics Directive, Packaging and Packaging Waste Directive, and the Circular Economy Strategy create a legislative framework that compels manufacturers to seek more sustainable alternatives. For example, the requirement for a minimum share of recycled material in packaging (e.g., 30% by 2030) stimulates demand for high-quality recyclates. Similarly, restrictions on microplastics in cosmetics and detergents are driving the development of biodegradable polymers based on natural raw materials.

Certification systems such as ISCC PLUS, REDcert, or OK Biobased provide transparent verification of the origin and environmental parameters of bio-based materials. These certifications are crucial for manufacturers who want to demonstrate compliance with sustainability in supply chains. For recycled polymers, the REACH and CLP certification system plays a key role in ensuring safety and compliance with chemical legislation. A growing trend is the introduction of digital product passports, which enable tracking of the entire material lifecycle from production to recycling and provide customers with relevant information on ecological properties.

Looking for Solutions for Sustainable Polymers?

GCG Group supplies a broad portfolio of biobased and recycled polymers, including additives for their processing. For each raw material, we provide complete technical support, safety data sheets, and consulting to select the optimal solution for your application. Contact us – or browse our catalog of over 1,300 products right away.