Sustainable Waterborne Polyurethane Adhesive With Superstrong Adhesion Performance and Excellent Weatherability from Biomass Lignin and CO2‐Based Polyols DOI Open Access
Rui Li, Lifeng Li, Wenlian Qiu

et al.

Advanced Functional Materials, Journal Year: 2025, Volume and Issue: unknown

Published: March 20, 2025

Abstract Utilizing biomass and CO 2 to synthesize biodegradable reusable polymeric materials is critical for addressing the dual challenges of petrochemical resource depletion environmental pollution. Among emerging alternatives, ‐based polyols (PPC) exhibit exceptional promise in replacing petroleum‐based polyols; while, lignin stands as most abundant aromatic resource. However, integrating these feedstocks produce high‐performance with combined biodegradability, recyclability, reusability remains technically demanding. In this work, a lignin‐based waterborne polyurethane adhesive (LWPU) developed using PPC low‐molecular‐weight (AOH), achieving high solid content (53.2%) outstanding overall properties. The incorporation strengthens hydrogen‐bonding networks increases crosslinking density, thereby enhancing cohesive energy density. optimized LWPU demonstrates robust adhesion on diverse substrates, lap shear strengths reaching 14.7 MPa (wood), 10.6 (steel), 9.0 (aluminum). Notably, it maintains structural integrity under extreme thermal variations (–30 °C 100 °C), high‐humidity (95% ± 5% RH), prolonged ultraviolet (UV) irradiation conditions. Further, lignin‐reinforced dynamic covalent hydrogen bonds impart recyclability adhesives. This methodology establishes sustainable pathway designing bio‐adhesives that synergistically utilize CO₂‐derived feedstocks.

Language: Английский

Sustainable Waterborne Polyurethane Adhesive With Superstrong Adhesion Performance and Excellent Weatherability from Biomass Lignin and CO2‐Based Polyols DOI Open Access
Rui Li, Lifeng Li, Wenlian Qiu

et al.

Advanced Functional Materials, Journal Year: 2025, Volume and Issue: unknown

Published: March 20, 2025

Abstract Utilizing biomass and CO 2 to synthesize biodegradable reusable polymeric materials is critical for addressing the dual challenges of petrochemical resource depletion environmental pollution. Among emerging alternatives, ‐based polyols (PPC) exhibit exceptional promise in replacing petroleum‐based polyols; while, lignin stands as most abundant aromatic resource. However, integrating these feedstocks produce high‐performance with combined biodegradability, recyclability, reusability remains technically demanding. In this work, a lignin‐based waterborne polyurethane adhesive (LWPU) developed using PPC low‐molecular‐weight (AOH), achieving high solid content (53.2%) outstanding overall properties. The incorporation strengthens hydrogen‐bonding networks increases crosslinking density, thereby enhancing cohesive energy density. optimized LWPU demonstrates robust adhesion on diverse substrates, lap shear strengths reaching 14.7 MPa (wood), 10.6 (steel), 9.0 (aluminum). Notably, it maintains structural integrity under extreme thermal variations (–30 °C 100 °C), high‐humidity (95% ± 5% RH), prolonged ultraviolet (UV) irradiation conditions. Further, lignin‐reinforced dynamic covalent hydrogen bonds impart recyclability adhesives. This methodology establishes sustainable pathway designing bio‐adhesives that synergistically utilize CO₂‐derived feedstocks.

Language: Английский

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