Researchers at Jeonbuk National University in South Korea have developed a sustainable, light-responsive adhesive that combines strong performance with reusability. The innovation addresses a long-standing issue in design and manufacturing: the environmental impact of petroleum-based adhesives that prevent recycling and material separation.

From Rose Oil to High-Performance Adhesion

The research team, led by Professor Kwang-Un Jeong, created the adhesive using a biomass-derived compound from rose oil. This renewable ingredient replaces most fossil-based components and accounts for around 95% of the final formulation. A small amount of a functional monomer adds light-responsive behaviour.

The result is an adhesive that balances flexibility, strength and durability, while significantly reducing environmental impact.

Light-Controlled Bonding and Easy Disassembly

The adhesive changes its bonding strength when exposed to light. Ultraviolet light weakens the bond, allowing components to separate easily. Visible light restores the original strength, making the process fully reversible.

Heat and solvents can also reduce adhesion temporarily. After cooling or evaporation, the adhesive regains more than 90% of its original strength, even after repeated use. This behaviour is especially valuable for circular product design, modular interiors, temporary architecture and reusable packaging, where clean disassembly is essential.

Broad Material Compatibility

Tests show strong adhesion to many materials, including metals, plastics, rubber, glass, cork, and paper. This wide compatibility makes the adhesive suitable for diverse applications, such as automotive interiors, consumer products, adaptive building components and smart packaging systems.

The researchers also demonstrated a UV-sensitive switch, showing how the adhesive can function in smart and responsive systems. This highlights growing opportunities at the intersection of material innovation, design and technology.

A Step Towards Circular Adhesive Systems

By replacing fossil-based adhesives with biobased and reusable alternatives, this research supports more circular material cycles. Adhesives no longer need to be permanent or polluting. Instead, they can actively enable repair, reuse and recycling.

Source: Jeonbuk National University
Photo: silviarita