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  • Open Access


    Little Secrets for the Successful Industrial Use of Tannin Adhesives: A Review

    Antonio Pizzi*

    Journal of Renewable Materials, Vol.11, No.9, pp. 3403-3415, 2023, DOI:10.32604/jrm.2023.030930

    Abstract This brief article reviews a very particular and quite narrow field, namely what has been done and what is needed to know for tannin adhesives for wood panels to succeed industrially. The present fashionable focus on bioadhesives has led to producing chemical adhesive formulations and approaches for tannin adhesives as a subject of academic publications. These, as good and original they might be, are and will still remain a rather empty academic exercise if not put to the test of real industrial trials and industrial use. They will remain so without the “little” secrets and… More >

  • Open Access


    Formaldehyde-Free Wood Composites from Soybean Protein Adhesive

    Richard C. Ferguson, Sharathkumar K. Mendon, James W. Rawlins*, Shelby F. Thames

    Journal of Renewable Materials, Vol.2, No.3, pp. 166-172, 2014, DOI:10.7569/JRM.2013.634133

    Abstract Commercial particleboards are currently synthesized by blending wood furnish with formaldehyde-based resins and curing them under a combination of heat and pressure. Particleboards manufactured with urea-formaldehyde resin are known to liberate formaldehyde during their service lives. Formaldehyde’s carcinogenicity has prompted the search for environmentally-friendly resins for wood composite manufacture. Soybean protein-based adhesives have been developed as a renewable and formaldehyde-free replacement for urea-formaldehyde resins. Particleboards processed using the soybean protein adhesive matched or exceeded performance criteria of M-2-grade commercial particleboards when evaluated as per American National Standards Institute (ANSI) specifi cations. More >

  • Open Access


    Evaluation of Mechanical Properties and Durability Performance of HDPE-Wood Composites

    M. Tazi1, F. Erchiqui1,*, F.Godard1, H. Kaddami2

    Journal of Renewable Materials, Vol.2, No.4, pp. 258-263, 2014, DOI:10.7569/JRM.2014.634120

    Abstract This article evaluates the mechanical properties and biodegradability of wood-plastic composite materials made from sawdust and thermoplastic polymer (HDPE). For the preparation of the composites, sawdust in different proportions with Maleic Anhydride grafted Polyethylene (MAPE) as the coupling agent was used. The mechanical properties and biodegradability of the biocomposites were successively characterized. The results indicate that adding sawdust particles to a polymer matrix improves the mechanical strength and stiffness of composites. The tensile strength of a composite with 3% coupling agent was improved by 13%, 34% and 54% respectively when 20%, 30% and 40% wood… More >

  • Open Access


    Development and Characterization of Eco-Friendly Non-Isocyanate Urethane Monomer from Jatropha curcas Oil for Wood Composite Applications

    Samsul Bhakri1, Muhammad Ghozali2,*, Edy Cahyono1, Evi Triwulandari2, Witta Kartika Restu2, Nissa Nurfajrin Solihat3, Apri Heri Iswanto4,5, Petar Antov6, Viktor Savov6, Lee Seng Hua7, Erika Ayu Agustiany8, Lubos Kristak9, Widya Fatriasari3,*

    Journal of Renewable Materials, Vol.11, No.1, pp. 41-59, 2023, DOI:10.32604/jrm.2022.023151

    Abstract The aim of this research work was to evaluate the potential of using renewable natural feedstock, i.e., Jatropha curcas oil (JCO) for the synthesis of non-isocyanate polyurethane (NIPU) resin for wood composite applications. Commercial polyurethane (PU) is synthesized through a polycondensation reaction between isocyanate and polyol. However, utilizing toxic and unsustainable isocyanates for obtaining PU could contribute to negative impacts on the environment and human health. Therefore, the development of PU from eco-friendly and sustainable resources without the isocyanate route is required. In this work, tetra-n-butyl ammonium bromide was used as the activator to open the… More > Graphic Abstract

    Development and Characterization of Eco-Friendly Non-Isocyanate Urethane Monomer from <i>Jatropha curcas</i> Oil for Wood Composite Applications

  • Open Access


    Synthesis of Green Adhesive with Tannin Extracted from Eucalyptus Bark for Potential Use in Wood Composites

    Medjda Amari1, Kamel Khimeche1,*, Abdelkader Hima2 , Redouane Chebout3, Abderahmane Mezroua1

    Journal of Renewable Materials, Vol.9, No.3, pp. 463-475, 2021, DOI:10.32604/jrm.2021.013680

    Abstract Recently, the exploitation of renewable plant resources in the formulation of adhesives is very promising for their availability at low coast, as well as their richness in biomolecules such as polyphenols. In this way, many research studies tannins extracted from different sources such as mimosa, quebracho, and pine have been the subject of very satisfactory recent studies. In this paper, a new complete characterization of the tannins extracted from the bark of eucalyptus globulus harvested from two regions in Algeria was achieved. The structural characterization enabled us to confirm the richness in condensed tannins, particularly in procyanidin More >

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