Recyclable nitrile gloves: fact or marketing?
More than 500 billion disposable gloves are used and then incinerated worldwide every year. In healthcare, nitrile gloves are among the most commonly used consumables. They are often worn for only a few minutes, but the environmental impact of their production and processing is enormous.
The fossil origin & production impact:
What often goes unnoticed is what these gloves are made of. A nitrile glove is made of petroleum-based synthetic rubber. During production, the material is vulcanized, heated, and cured into a strong and elastic glove. This process requires a lot of energy and water.
The impact is tangible. A footprint analysis by Erasmus MC (see above) shows that the use of disposable gloves alone within a single hospital can lead to approximately 49,900 kilograms of CO₂ emissions per year, over 6,200 kilograms of material usage, and approximately 2,580 cubic meters of water consumption. The analysis, conducted by Metabolic in 2021, demonstrates the significant structural impact of a single consumable within healthcare.
The problem isn't just one glove. It's the sheer volume.
Why nitrile gloves are not recyclable:
As previously described, the raw material is vulcanized during the production process. This process links the polymer chains together, making the material strong and elastic, but preventing it from melting.
Independent DSC heat tests (see above) clearly demonstrate this. Conventional nitrile gloves exhibit no melting point at high temperatures. They do not liquefy, but degrade. This means that, in practice, nitrile gloves cannot be reprocessed as equivalent raw materials. Reuse while retaining the original material properties is not possible.
This means that, in practice, nitrile gloves (almost) always end up in the incinerator. This releases fossil CO₂ and valuable raw materials are permanently lost. The chain remains linear: production, use, and incineration.
Biodegradable: The alternative?
Biodegradable nitrile gloves are presented as a more sustainable alternative to conventional nitrile. The promise is that the material will degrade faster under certain conditions. However, the question is whether this actually leads to true sustainability in practice.
There is no convincing evidence for this based on available test results.
Source: Ansell (2023) – ASTM D5511 test results
Ansell, one of the largest glove manufacturers in the world, conducted a laboratory test (see above) according to ASTM D5511 to measure the extent to which so-called biodegradable gloves actually biodegrade.
The graph shows the degradation over a period of 240 days. The tested biodegradable gloves show almost no degradation. The measured values remain around zero percent, meaning that within 240 days, there is virtually no measurable biodegradation.
Any improved degradability is only visible under ideal, controlled conditions, such as a constant temperature between 50 and 70 degrees Celsius. Creating and managing such conditions on a large scale is not financially feasible.
Furthermore, biodegradable nitrile remains a vulcanized material that cannot be remelted. The original raw material value is lost, regardless of the label.
In short, based on the available test results it can be concluded that so-called biodegradable nitrile gloves do not constitute a demonstrably sustainable alternative.
It's not without reason that the European Union is working on stricter legislation regarding sustainability claims. Misleading or insufficiently substantiated claims about biodegradability and environmental performance will increasingly be restricted or prohibited.
What makes Gloovy unique?
Gloovy consciously chooses a different approach. The material used, a copolymer, is inherently more sustainable than conventional nitrile butadiene rubber. Furthermore, the gloves are produced using a more efficient and sustainable production method.
The chosen raw material structure also allows for mechanical recycling after use. This means the material can be remelted and processed into new raw material.
Combined with an organized collection and processing flow, used gloves are not incinerated but reused as raw materials. This shifts the system from a linear model to a circular chain.
This results in approximately 70 percent CO₂ reduction and approximately 50 liters of water savings per box of 100 gloves compared to conventional nitrile.
Several healthcare organisations are now actively collecting used gloves.
Want to know how this could work for your organization? We'd love to talk with you!
Sources
Metabolic (2021) – Footprint analysis Erasmus MC
Ansell – What our tests reveal about biodegradable nitrile gloves