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Application areas of bio-based UV resins

Release time:

2026-09-02 06:44

Application areas of bio-based UV resins

Bio-based UV resins are derived from renewable resources such as vegetable oils, lignin, and eugenol. While retaining the rapid curing advantages of UV light, they significantly reduce reliance on fossil‑based feedstocks. Through sustained R&D in recent years, these bio‑based resins have progressed from laboratory studies to early commercialization, finding applications across multiple sectors, including 3D printing, coatings, electronic packaging, adhesives, and medical devices. Their expanding scope of use stems, on the one hand, from advances in molecular design and modification technologies, which have steadily brought their mechanical properties and thermal stability closer to those of petroleum‑based counterparts. On the other hand, the incorporation of dynamic covalent bonds endows these materials with self‑healing and reprocessability, addressing the longstanding challenge of poor recyclability inherent in conventional photopolymerizable resins.

I. The Field of 3D Printing

3D printing is one of the most dynamic application areas for bio-based UV‑curable resins. A variety of vegetable oils have been successfully employed to develop photopolymerizable 3D‑printing resins. Industrial hempseed oil, after undergoing a two‑step modification involving epoxidation and acrylation, can be blended with commercial polyfunctional acrylate monomers to achieve rapid curing under UV irradiation; the resulting printed parts exhibit excellent stiffness and toughness. Rubberseed oil has also been used to synthesize UV‑curable polyurethane acrylate resins suitable for DLP 3D printing. Plant‑oil‑based resins such as linseed oil and tung oil likewise demonstrate promising potential in this field.

Eugenol-based resins offer unique advantages in 3D printing. Researchers have developed a green synthesis process for eugenol‑based epoxy monomers that is scalable, and further converted these monomers into acrylate esters to create a resin system capable of dual curing. This resin first forms its initial shape via UV curing, followed by a thermal curing stage in which dynamic bond exchange reactions modulate the crosslink density, thereby enabling precise control over the material’s mechanical properties. The presence of dynamic bonds also endows the material with self‑healing and reprocessability, allowing it to perform distinctive welding functions in additive manufacturing.

Lignin derivatives are also important feedstocks in the field of 3D printing. Bio-based resins synthesized from vanillin derivatives and epoxy soybean oil acrylates exhibit mechanical properties comparable to those of conventional petroleum‑based resins, holding promise for applications in photopolymerization‑based 3D printing. Photocurable systems based on lignin‑derived monomers, when formulated with reactive diluents, can effectively reduce resin viscosity and enhance 3D printing performance.

II. Coatings Sector

Coatings represent one of the earliest industrial applications of bio-based UV resins. Studies have shown that different bio-based UV resins exhibit varying performance characteristics—such as pigment and filler dispersion, film curing, sandability, and hardness—and that certain preferred resins demonstrate excellent compatibility across a wide range of coating systems.

The reaction rate, durability, hardness, and adhesion of bio-based UV‑curable resin coatings all meet the performance requirements of industry standards for UV‑cured wood coatings. The use of cashew phenol‑ and eugenol‑based phosphate diluents in coating formulations can effectively reduce curing‑induced volumetric shrinkage while increasing the bio‑based content, thereby enhancing the coating’s resistance to cracking. Itraconic acid‑modified epoxidized soybean oil resin exhibits stable adhesive properties and pronounced hydrophobicity after UV curing, demonstrating promising application potential in paper‑packaging coating systems.

III. Adhesives and the Electronics Industry

In the adhesives sector, bio-based UV resins can be used to manufacture products such as standard clear tapes, PET double-sided tapes, and stationery tapes. They exhibit high initial tack and peel strength, low shrinkage, and excellent cohesion, while offering good removability and facilitating the recycling of bonded substrates. In the electronics industry, bio-based UV resins are suitable for bonding and laminating electronic components, as well as for assembling backlight modules, thereby meeting the sector’s demand for environmentally friendly materials.

IV. Medical and Sports Equipment

The application of bio-based UV resins in the medical field is currently under investigation. Research indicates that bio-based photocurable resins have already demonstrated initial commercial potential in the production of high-performance medical implants and single-use medical consumables. In the sports equipment sector, bio-based UV resins are also being employed in the manufacture of relevant products.

V. Other Application Areas

Bio-based UV resins can also be used in systems for paper, plastics, flooring, metal coatings, and more. By incorporating dynamic covalent bonds, certain bio-based resins enable chemical recycling under specific conditions, offering a recyclable solution for single‑use applications such as paper packaging coatings.

VI. Conclusion

The application areas of bio-based UV resins now span multiple sectors, including 3D printing, coatings, adhesives, electronic packaging, medical devices, and sports equipment. In the field of 3D printing, raw materials such as industrial hempseed oil, eugenol, and lignin derivatives have been successfully used to produce photopolymerizable resins whose performance rivals that of petroleum‑based counterparts. In coatings, bio-based resins already meet the industry standards for wood‑coating applications. Meanwhile, in the adhesives and electronics sectors, bio‑based UV resins are gradually replacing conventional products. As synthesis strategies and molecular design approaches continue to be refined, the scope of applications for bio‑based UV resins will expand further.

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