Scientists Create Flexible Glove Coating from Lignin Using 3D Printing

Scientists at the German Institutes of Textile and Fiber Research Denkendorf (DITF) have successfully developed a durable yet flexible glove coating using eco-friendly lignin through an innovative 3D printing process.

Protective gloves used in work, sports, or everyday gardening owe their protective qualities to a special coating. This coating enhances abrasion resistance, makes the gloves waterproof, and shields them from chemicals, oil, cuts, and punctures. Traditionally, these coatings have been made from oil-based polymers, nitrile rubber, or latex. However, scientists at the German Institutes for Textile and Fiber Research Denkendorf (DITF) have now developed a durable yet flexible glove coating using eco-friendly lignin, applied through an innovative 3D printing process.

Coatings exposed to mechanical stress inevitably lead to some level of abrasion, which disperses into the environment. This also applies to coated protective gloves.

In order to avoid long-term pollution of the environment, materials are to be used whose abrasion particles are degradable. The aim of the research project was to improve conventional protective equipment and integrate more sustainable materials.

The biopolymer lignin is a natural component of plant cells, which is a by-product of paper production in large quantities. Due to its properties, it represents an environmentally friendly alternative to oil-based coating polymers.

The scientists created biopolymer compounds containing lignin, which were used to produce thermoplastic materials suitable for 3D printing.

Lignin contains few polar groups, making it hydrophobic and insoluble in water. As a result, it biodegrades slowly, making it an ideal choice for durable coating materials.

3D Printing for Enhanced Freedom of Movement

The use of 3D printing enables precise and efficient production of the glove coating, allowing customization to the wearer's specific needs. This enhances comfort and supports greater freedom of movement.

The research demonstrates that lignin-based coatings not only provide ecological advantages but also result in highly durable and resistant protective gloves. These gloves meet safety standards while promoting sustainability in the workplace.

The project was funded by the Ministry of Rural Areas and Consumer Protection of Baden-Württemberg as part of the Bioeconomy Innovation and Investment Program for Rural Areas 'BIPL BW - Innovation' (funding reference BWIN220081).

Source: Deutsche Institute für Textil- und Faserforschung