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Self-Bonding Boards From Plantain Fiber Bundles After Enzymatic Treatment: Adhesion Improvement of Lignocellulosic Products by Enzymatic Pre-Treatment

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Abstract

Self-bonding boards were manufactured with treated fibers at different concentrations of a laccase enzyme. This enzyme induced the generation of phenoxy radicals in the fiber lignin which can generate covalent bonds and cross-linked by radical–radical coupling. The effect of laccase concentration on the properties of obtained fiberboards was evaluated. The formation of free radicals and changes in the lignin macromolecule was measured using scavenging activity test, infrared spectroscopy, electron paramagnetic resonance and scanning electron microscopy. Thermal and mechanical properties of the resulting fiberboards were determined by differential scanning calorimetry, thermo gravimetric analysis and flexion tests. Increased thermal stability, modulus of elasticity and modulus of rupture and also, a reduction in thickness swelling and water absorption, were observed at higher concentrations of laccase. These results are ascribed to the effect of the free radicals that were generated during the enzymatic treatment.

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Acknowledgments

The authors would like to thank to Juan Alberto Vélez for the manuscript revision, to CIDI-UPB for their financial support and to Colciencias by grant the doctoral scholarship to Ing. Alvarez.

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Authors and Affiliations

  1. School of Engineering, Mechanical Engineering Program, New Materials Research Group, Universidad Pontificia Bolivariana, Circular 1, # 70-01, bloque 11, Medellín, Colombia

    Catalina Álvarez & Piedad Gañán

  2. School of Engineering, Agro-Industrial Engineering Program, Universidad Pontificia Bolivariana, Medellín, Colombia

    Catalina Álvarez

  3. Department of Chemistry, Universidad Nacional de Colombia, Medellín, Colombia

    Benjamín Rojano

  4. Department of Physics, Universidad Nacional de Colombia, Bogotá, Colombia

    Ovidio Almaza

  5. Department of Forest Biomaterials, North Carolina State University, Raleigh, NC, USA

    Orlando J. Rojas

Authors
  1. Catalina Álvarez
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  2. Benjamín Rojano
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  3. Ovidio Almaza
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  4. Orlando J. Rojas
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  5. Piedad Gañán
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Correspondence to Catalina Álvarez.

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Álvarez, C., Rojano, B., Almaza, O. et al. Self-Bonding Boards From Plantain Fiber Bundles After Enzymatic Treatment: Adhesion Improvement of Lignocellulosic Products by Enzymatic Pre-Treatment. J Polym Environ 19, 182–188 (2011). https://doi.org/10.1007/s10924-010-0260-6

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  • DOI: https://doi.org/10.1007/s10924-010-0260-6

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