New Plant-Based Vitrimer from Lithuania Could Replace Petroleum Plastics — Self‑Healing, Antimicrobial and 3D‑Printable

Researchers develop plant-based vitrimer with multiple high-value properties

Researchers at Kaunas University of Technology (KTU) in Lithuania have created a plant‑based polymer that could serve as an alternative to petroleum‑derived plastics while offering several functional advantages. The material belongs to a class of polymers called vitrimers, a relatively recent family of recyclable, reworkable thermosets discovered about three decades ago, according to Technology Networks.

"Advanced materials can be not only functional, but also friendly to people and the environment. Such work paves the way for technologies that contribute to a safer and more sustainable everyday life," KTU professor Jolita Ostrauskaitė said.

This new vitrimer is notable for combining multiple desirable features in a single, bio‑derived formulation: self‑healing, shape memory, antimicrobial activity and compatibility with optical 3D printing. Achieving all of these characteristics from plant‑based feedstocks is an important step toward multifunctional sustainable materials.

KTU researchers emphasize practical advantages: the polymers are synthesized from plant oils and by‑products of biodiesel production, cured under ultraviolet or visible light, and do not require added catalysts. According to the team, the network rearrangements that enable vitrimer behavior arise naturally from the material's chemical structure.

The group has already demonstrated real‑world utility by 3D‑printing and testing medical components such as a Y‑shaped connector for infusion or respiratory equipment. Using optical 3D printing — which can consume less energy and generate less waste than some conventional manufacturing methods — the researchers anticipate fabricating more complex items like optical lenses or electronic parts.

The material's antimicrobial properties increase its appeal for hygiene‑sensitive applications. KTU scientists report that certain molecular fragments, derived from plant oils and biodiesel by‑products, interfere with vital functions in bacteria and other microorganisms, making the polymers suitable for surfaces and devices that must remain clean.

Plastic pollution remains a pressing global challenge: the world produces over 462 million tons of plastic each year, and an estimated 9–14 million tons enter the oceans annually. Recycling rates are low in practice — often under 10% — so new sustainable materials and manufacturing approaches are important complements to improved waste management.

While further testing, regulatory review and scale‑up will be needed, KTU's plant‑based vitrimer shows promise for use in medical devices, scientific instruments, electronics, sensors and other precision or hygiene‑critical fields where durability, cleanliness and printability matter.

"Such multifunctional and sustainable solutions are still very rare, making this an important step forward both scientifically and industrially," a KTU researcher told Technology Networks.