Water-stable polyester synthesis using lignin and dual curing
Innovative process for synthesizing water-stable polyesters using lignin reagents and green solvents. This dual curing approach aims to enhance sustainability and efficiency by reducing time and temperature requirements in polyester production.
Overview
The proposed solution is a novel process for synthesizing water-stable polyesters incorporating lignin reagents and utilizing a dual curing method. This approach leverages a sustainable organic catalyst combined with volatile green solvents to enhance the production process's sustainability. The method significantly reduces the time and temperature typically required for polyester synthesis, promoting a greener, more efficient manufacturing process. The use of lignin, a natural polymer from woody biomass, aligns with the increasing demand for sustainable materials in industry.
Technical specifications
- Organic Catalyst Functionality: The catalyst plays a dual role in lignin functionalization and subsequent curing with epoxides, operating effectively at temperatures of 60°C for lignin functionalization and 110-130°C for curing.
- Green Solvents: Utilizes volatile, environmentally friendly solvents at each stage of the process.
- Dual Curing Approach: Designed to adapt to various target products, allowing for a customizable and flexible production process.
- Polyester Compatibility: Functionalized lignin is made compatible with polyesters, expanding the potential applications of the resulting materials.
Technology readiness level
This technology is currently at TRL 4, indicating that it has been validated in a laboratory environment. Ongoing validation includes optimizing reaction conditions and studying thermomechanical properties to meet specific industry requirements. The process is designed to eventually deliver a target amount of the final product for industry application, with further developments planned for compatibility with other polymeric systems.
About National Institute of Chemistry (Kemijski inštitut)
Slovenia’s National Institute of Chemistry (Kemijski inštitut) is a leading public research institute based in Ljubljana, bringing together multidisciplinary teams, advanced infrastructure, and close ties with universities to address industry‑relevant challenges. Industry partners engage through contract research, analytical services, collaborative projects, and access to shared facilities such as high‑field NMR, mass spectrometry, and advanced microscopy. Its location near established pharmaceutical and specialty‑chemical manufacturers in Slovenia and Central Europe supports agile partnering, talent pipelines, and rapid technology validation. Research is supported by competitive European Commission programs and national research funding. A dedicated technology transfer office manages IP, licensing, and spinout support, offering clear pathways from discovery to deployment.
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