Journal
ADVANCED FUNCTIONAL MATERIALS
Volume 26, Issue 16, Pages 2677-2685Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/adfm.201504990
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Funding
- Technology Innovation Program of Oak Ridge National Laboratory
- U.S. Department of Energy [DE-AC05-00OR22725]
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A new class of thermoplastic elastomers has been created by introducing nanoscale-dispersed lignin (a biomass-derived phenolic oligomer) into nitrile rubber. Temperature-induced controlled miscibility between the lignin and the rubber during high shear melt-phase synthesis allows tuning the material's morphology and performance. The sustainable product has unprecedented yield stress (15-45 MPa), strain hardens at large deformation, and has outstanding recyclability. The multiphase polymers developed from an equal-mass mixture of a melt-stable lignin fraction and nitrile rubber with optimal acrylonitrile content, using the method described here, show 5-100 nm lignin lamellae with a high-modulus rubbery interphase. Molded or printed elastomeric products prepared from the lignin-nitrile material offer an additional revenue stream to pulping mills and biorefineries.
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