PAPER making! FROM THE PUBLISHERS OF PAPER TECHNOLOGY INTERNATIONAL ® FROM THE PUBLISHERS OF PAPER TEC Volume 12, Number 1, 2026
Lignin nanoparticle stabilized Pickering emulsion coating for fabricating water- and oil-proof, biodegradable, and recyclable paper ZHENKE WEI, JIAYU LIU, YONGGUI WANG, ZEFANG XIAO & YANJUN XIE Paper derived from plant fibers is considered a highly promising alternative to non-degradable plastic packaging. However, its widespread use in packaging is limited by its poor water- and oil- proof properties. To address this challenge, this study developed a polyvinyl alcohol (PVA)/lignin nanoparticles (LNPs)/stearic acid (SA) (PLS) Pickering emulsion composite coating to fabricate high-performance biodegradable paper. In the emulsion system, the PVA acted as an oil-repellent in the aqueous phase, the SA served as a water-repellent in the oil phase, and the LNPs functioned as emulsifiers that effectively stabilized the emulsion. Owing to the synergistic effect among PVA, SA, and LNPs, the coated paper exhibited good water- and oil-proof properties (with a water con-tact angle of 111.2°, Cobb 60 value of 17.73g/m 2 , and Kit rating exceeding 9/12), along with high mechanical strength (including a dry tensile strength of 7.12kN/m and a wet tensile strength of 0.97kN/m). While significantly enhancing performance, the PLS emulsion coating retained the environmental benefits of paper, could be easily removed to facilitate fiber recycling, and the coated paper was fully degradable in soil within 120d. Overall, the PLS emulsion coating effectively enhanced the properties of paper without compromising its eco-friendly characteristics, demonstrating significant potential for promoting the substitution of plastic with paper. Contact information: Key Laboratory of Bio-based Material Science and Technology (Ministry of Education), College of Materials Science and Engineering, Northeast Forestry University, Harbin 150040, China. Journal of Bioresources and Bioproducts, Available online 27 January 2026, 100235, corrected proof
https://doi.org/10.1016/j.jobab.2026.100235 Creative Commons Attribution 4.0 License
The Paper Industry Technical Association (PITA) is an independent organisation which operates for the general benefit of its members – both individual and corporate – dedicated to promoting and improving the technical and scientific knowledge of those working in the UK pulp and paper industry. Formed in 1960, it serves the Industry, both manufacturers and suppliers, by providing a forum for members to meet and network; it organises visits, conferences and training seminars that cover all aspects of papermaking science. It also publishes the prestigious journal Paper Technology International ® and the PITA Annual Review , both sent free to members, and a range of other technical publications which include conference proceedings and the acclaimed Essential Guide to Aqueous Coating .
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Article 1 – Barrier Coatings
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