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  • Open Access


    Modification of Wood by Tannin-Furfuryl Alcohol Resins–Effect on Dimensional Stability, Mechanical Properties and Decay Durability

    Mahdi Mubarok1,2, Christine Gérardin-Charbonnier1,*, Elham Azadeh1, Firmin Obounou Akong1, Stéphane Dumarçay1, Antonio Pizzi1, Philippe Gérardin1,*

    Journal of Renewable Materials, Vol.11, No.2, pp. 505-521, 2023, DOI:10.32604/jrm.2022.024872

    Abstract Furfurylation is a well-known wood modification technology. This paper studied the effect of tannin addition on the wood furfurylation. Three kinds of dicarboxylic acids, adipic acid, succinic acid, and tartaric acid, as well as glyoxal as a comparing agent, were used to catalyse the polymerisation of furanic or tannin-furanic solutions during wood modification. Impregnation of furanic or tannin-furanic solution at a certain concentration into the wood followed with curing at 103°C for a specific duration was performed for the wood modification. Different properties of the modified woods like dimensional stability, resistance of treatment to leaching, More >

  • Open Access


    Fast Pressing Composite Using Tannin-Furfuryl Alcohol Resin and Vegetal Fibers Reinforcement

    Arnaud Nicollin1, Xinjun Li1, Pierre Girods1, Antonio Pizzi1,2,*, Yann Rogaume1

    Journal of Renewable Materials, Vol.1, No.4, pp. 311-316, 2013, DOI:10.7569/JRM.2013.634124

    Abstract Experimental investigations have been carried out on the potential use of tannin-furfuryl alcohol resin for biobased composites using vegetal fi ber reinforcement. Results showed that a mixture containing 54% furfuryl alcohol, 45% modifi ed quebracho extract and 0.9% paratoluenesulfonic acid as a catalyst yields a resin that can be used with a nonwoven fl ax fi ber mat to manufacture lightweight composites with good mechanical properties and a very short curing time with a regular hot press. The panels made were tested for tensile and fl exural modulus and strength, water resistance and thermo-degradation. More >

  • Open Access


    Effects of TiO2 Support and Cobalt Addition of Ni/TiO2 Catalyst in Selective Hydrogenation of Furfural to Furfuryl Alcohol

    Kittithad Wonglekha1,#, Weerachon Tolek1,#, Okorn Mekasuwandumrong2, Wasu Chaitree2, Piyasan Praserthdam1, Kiat Moon Lee3, Joongjai Panpranot1,3,4,*

    Journal of Renewable Materials, Vol.10, No.8, pp. 2055-2072, 2022, DOI:10.32604/jrm.2022.019680

    Abstract An effect of phase compositions (rutile, Rut and anatase, Ant) of TiO2 supports on the selective hydrogenation of furfural to furfuryl alcohol was investigated. The 15%wt Ni/TiO2 catalysts were prepared by incipient impregnation method. The result showed that Ni supported on anatase-rutile mixed phase TiO2 (91% Rut and 9% Ant, A2) provided the highest furfuryl alcohol yield at 43.8% due to the relatively strong Ni-TiO2 interaction, its appropriate crystallite sizes, and high average pore sizes. Furthermore, the effect of cobalt as a promoter on Ni/ TiO2-A2 catalysts was studied. The result showed that the Ni-Co/TiO2-A2 catalysts exhibited poorer More > Graphic Abstract

    Effects of TiO<sub>2</sub> Support and Cobalt Addition of Ni/TiO<sub>2</sub> Catalyst in Selective Hydrogenation of Furfural to Furfuryl Alcohol

  • Open Access


    Preparation of an Abrasive Grinding Wheel Based on Tannin Resin CrossLinked by Furfuryl Alcohol, Urea and Glyoxal

    Jinxing Li1, Jun Zhang1,*, Yunxia Zhou1, Zhaoling Zhou1, Hisham Essawy2, Xiaojian Zhou1,*, Guanben Du1

    Journal of Renewable Materials, Vol.8, No.9, pp. 1019-1032, 2020, DOI:10.32604/jrm.2020.012374

    Abstract Simple bio-based abrasive grinding wheel based on thermosetting resin matrix was developed starting with condensed tannin and furfuryl alcohol, which are mainly derived from forest and agricultural products like tree barks, wheat and crops. Fourier transform infrared spectra (FTIR) signified the acidic conditions are quiet efficient for the reaction of furfuryl alcohol, urea and glyoxal all together and the -CH2-NH- and -CH2-O-CH(OH)- groups are predominating in cross-linking of the tannin-furfuryl alcohol-urea-glyoxal (TFUG) resin. The strengthening contribution of the tannin was also confirmed by the preservation of its distinct crystallinity using X-ray diffraction (XRD). Differential scanning calorimetry… More >

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