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If you are a packaging manufacturer, sustainability professional, policymaker, or materials innovator, you have likely come across the growing conversation around biodegradable polymers.
The challenge the world faces today is clear. Traditional plastics can remain in the environment for 400–500 years, often fragmenting into microplastics rather than fully decomposing. According to global environmental studies, more than 11 million tonnes of plastic waste enter oceans every year.
This raises an important question:
Do biodegradable polymers break down the same way in every environment?
The answer is no. The degradation of biodegradable polymers depends heavily on environmental conditions such as temperature, microorganisms, moisture, and oxygen availability.
In this blog, we will explain how biodegradable polymers degrade in different environments, the science behind the process, and how companies like NovoEarth are developing responsible biodegradable polymer solutions to help eliminate microplastic pollution.
Biodegradable polymers are materials designed to break down naturally through microbial activity. Microorganisms such as bacteria and fungi digest these materials and convert them into natural components.
Instead of persisting as microplastics, properly designed biodegradable polymers break down into:
Some widely used biodegradable polymers include:
According to European Bioplastics, global production capacity of biodegradable polymers is expected to exceed 7 million tonnes by 2028, showing the rapid shift toward sustainable materials.
The degradation of biodegradable polymers generally occurs in three key stages.
Stage | Process | Result |
Fragmentation | Polymer chains weaken | Material begins breaking apart |
Microbial digestion | Microorganisms consume fragments | Enzymes break polymer bonds |
Mineralisation | Final conversion | Material becomes CO₂, water and biomass |
The breakdown of biodegradable polymers depends on several environmental factors:
Because these factors differ across ecosystems, biodegradable polymers behave differently in soil, compost, marine environments, and landfills.
Industrial composting provides ideal conditions for many biodegradable polymers.
Typical composting conditions include:
Under these conditions, many biodegradable polymers degrade within 90–180 days.
Industrial composting is widely used for:
When biodegradable polymers enter soil environments, the breakdown process depends on microbial diversity and soil moisture.
Typical soil conditions:
In soil environments, biodegradable polymers may take:
6 months to 2 years to fully degrade.
This property makes biodegradable polymers useful in applications such as:
Plastic pollution in oceans is one of the most pressing environmental challenges today.
The United Nations Environment Programme estimates that over 11 million tonnes of plastic enter the ocean every year.
In marine environments:
Because of these conditions, biodegradable polymers degrade much slower in marine environments.
However, certain materials like PHA-based biodegradable polymers are capable of breaking down through marine microbial activity, helping reduce long-term plastic accumulation.
Landfills present a different challenge for biodegradable polymers.
Typical landfill conditions include:
In these conditions, biodegradable polymers may degrade slowly over several years.
However, decomposition can generate biogas such as methane and carbon dioxide, which some landfill facilities capture for energy recovery.
Environment | Typical Conditions | Degradation Time |
Industrial Compost | High heat and microbes | 3–6 months |
Soil | Moderate microbes | 6 months – 2 years |
Marine | Low temperature | 1–5 years |
Landfill | Low oxygen | Several years |
Not all biodegradable polymers behave the same way. Their chemical composition, additives, and structure determine how they break down.
Material scientists aim to balance:
At NovoEarth, innovation in biodegradable polymers focuses on:
NovoEarth develops biodegradable polymers that are not just degradable but responsibly degradable, ensuring they break down safely in real-world conditions.
Switching to biodegradable polymers can provide several sustainability advantages.
According to the OECD, the world produces more than 353 million tonnes of plastic waste annually, highlighting the urgent need for better materials like biodegradable polymers.
Research and innovation in biodegradable polymers are accelerating rapidly.
Future developments include:
Companies like NovoEarth are working toward next-generation biodegradable polymer technologies that combine performance with environmental responsibility.
Biodegradable polymers are materials that microorganisms can break down into natural substances like water, carbon dioxide, and biomass.
Some biodegradable polymers can degrade in marine environments, but the process is slower due to lower microbial activity.
Industrial composting may take 3–6 months, while soil or marine environments may take months to years.
Properly engineered biodegradable polymers are designed to fully mineralise, reducing microplastic formation.
When designed and disposed of properly, biodegradable polymers can significantly reduce environmental plastic pollution.
NovoEarth is developing next-generation biodegradable polymers designed to reduce microplastic pollution and enable circular plastic systems.
Explore our work in sustainable materials at
👉 NovoEarth.co
Sarthak Gupta
Sarthak Gupta is a Mechanical Engineer and the founder of NovoEarth, a cleantech venture specialising in circular material innovation and sustainable polymer solutions.
His expertise lies in biodegradable polymer technologies and recycling systems for multilayer plastics, complex waste streams traditionally considered non-recyclable. With prior research and development experience in renewable energy and wind turbine design, Sarthak focuses on translating engineering innovation into scalable, commercially viable climate solutions.