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Updated: Jan 16, 2026

Designed for Molecular Recycling: A Lignin-Derived Semi-aromatic Biobased Polymer
Published on: November 30, 2020
Versatile lignin-reinforced natural rubber latex adhesives: Integrating strength, environmental resilience, and
Rong Zhao1, Dongna Li2, Xiaoge Ye2
1Department of Art and Design Science, Shanxi Institute of Technology, Shanxi, 045000, PR China.
Abstract:
To address the unsustainability and environmental-health risks associated with conventional petroleum-based adhesives, we report a sustainable route to high-performance adhesives via ammonium persulfate (APS)-initiated grafting of alkali lignin (AL), sodium lignosulfonate (SLS), and enzymatic hydrolysis lignin (EHL) onto natural rubber latex (NRL). Grafted formulations show a >50 % increase in lap shear strength, a ≈4 % rise in glass transition temperature (Tg, from -62.4 °C to -59.8 °C), and stable adhesion under 70 % relative humidity. Soil burial tests reveal controlled biodegradation (20.6 % vs. 29.2 % mass loss for AL-grafted NRL and pure NRL). Enhanced antioxidant and mold-resistance further underscore lignin's dual reinforcing and stabilizing roles. This versatile platform delivers tunable performance and predictable end-of-life behavior for green packaging and biomedical adhesives.
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