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Lengwan Li

Defibrillation of cellulosic substrates by novel bio-based ionic liquids 

New bio-based ionic liquids were developed as a greener and simple pathway for the activation of cellulosic substrates compatible with chemical modification (such as in situ polymerization). Preliminary experiments showed that these ionic liquids promote swelling/dispersing/defibrillation/partial dissolution of cellulose while retaining cellulose I crystalline structure after regeneration (full dissolution is not achieved). To get a […]

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Mechanical behavior of all-lignocellulose composites 

In this study, we investigated property differences and failure mechanisms of hot-pressed, binder-free wood fiber composites. Random-in-plane microfibrillated lignocellulose (MFLC) composites showed better mechanical properties than microscale wood fibers WF due to stronger strain-hardening from lower porosity and better interfibrillar adhesion, provided by the intrinsic lignin-hemicellulose binder. Axially oriented wood fiber composites (O-WF) reached comparable

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