João Vitor Dorini Falavinha¹, Pedro Henrique Gonzales De Cademartori², Philippe Gérardin¹, Antonio Pizzi¹, Christine Gérardin-Charbonnier^1,*

Journal of Renewable Materials, Vol.13, No.4, pp. 687-697, 2025, DOI:10.32604/jrm.2025.058902 - 21 April 2025

Abstract Tannins are polyphenols widely present in the plant kingdom, commonly divided into two groups: condensed and hydrolysable tannins. Sustainable furanic bio-foams based on condensed tannins have been largely studied, but little is described about the use of hydrolysable tannins for this material. This study examined the potential of hydrolysable chestnut tannin in comparison to condensed mimosa tannins to produce furanic foams by chemical expansion. Due to the low reactivity of the hydrolysable tannin, the use of an external source for its polymerization and curing was necessary. Through Fourier transform infrared spectroscopy (FTIR) chromatography, it was More > Graphic Abstract

Mahdi Mubarok^1,*, Pirda Maharani Nafisah¹, Adi Santoso², Saefudin^2,*, Efrida Basri², Yusuf Sudo Hadi^1,3, Adik Bahanawan², Rohmah Pari², Imam Busyra Abdillah¹, Jingjing Liao⁴, Dede Hermawan¹, Trisna Priadi¹, Philippe Gérardin⁵, Wayan Darmawan¹

Journal of Renewable Materials, Vol.13, No.4, pp. 731-752, 2025, DOI:10.32604/jrm.2024.057476 - 21 April 2025

Abstract Furfurylation, a renowned chemical modification technique, uses furfuryl alcohol to enhance the properties of wood. This technology can be further refined by incorporating renewable tannins, which promote cross-linking with furfuryl alcohol. This study investigates the effects of furfurylation and tannin-modified furfurylation on the physical and mechanical properties of tropical Gmelina wood (Gmelina arborea Roxb.). Experiments involved impregnating Gmelina wood with aqueous solutions of furfuryl alcohol (FA) at 40% and 70% concentrations, as well as FA-tannin combinations (FA 40%-TA and FA 70%-TA), followed by polymerization at 103°C. The results demonstrated that both FA and FA-tannin treatments significantly… More > Graphic Abstract

Jinxing Li¹, Mustafa Zor², Xiaojian Zhou³, Guanben Du³, Denis Rodrigue⁴, Xiaodong (Alice) Wang^1,*

Journal of Renewable Materials, Vol.13, No.2, pp. 329-347, 2025, DOI:10.32604/jrm.2024.056795 - 20 February 2025

Abstract In this study, two series of foams based on tannic acid (TA), furfuryl alcohol (FA), soybean protein isolate (SPI), and casein (CA), namely TA–FA–SPI (TS series) and TA–FA–CA (TC series) were developed, and their properties were enhanced by adding poplar fibers (WF). From the samples produced, a complete set of characterization was performed including possible crosslinking reactions, morphology, mechanical properties, flame retardancy, thermal insulation and thermal stability. Fourier-transform infrared spectroscopy (FTIR) revealed possible covalent crosslinking among the components and hydrogen bonding between WF and the matrix. Viscosity results indicated that lower prepolymer viscosity led to… More >

Ming Ni¹, Lei Li¹, Yiqiang Wu^1,*, Jianzheng Qiao¹, Yan Qing¹, Ping Li², Yingfeng Zuo^1,*

Journal of Renewable Materials, Vol.12, No.8, pp. 1355-1368, 2024, DOI:10.32604/jrm.2024.054050 - 06 September 2024

Abstract Furfurylated wood exhibits excellent dimensional stability and corrosion resistance, making it a promising material for constructing buildings, but it is highly flammable. Herein, flame-retardant furfurylated poplar wood was produced via a two-step process utilizing boric acid (BA) and ammonium dihydrogen phosphate (ADP) as flame-retardant components, and biomass-derived furfuryl alcohol (FA) as a modifier. The acidity of BA and ADP allowed them to catalyze the polymerization of FA, which formed a cross-linked network that immobilized BA and ADP inside the wood. The addition of BA/ADP substantially delayed the time to ignition from 10 to 385 s More > Graphic Abstract

Mahdi Mubarok^1,2, Christine Gérardin-Charbonnier^1,*, Elham Azadeh¹, Firmin Obounou Akong¹, Stéphane Dumarçay¹, Antonio Pizzi¹, Philippe Gérardin^1,*

Journal of Renewable Materials, Vol.11, No.2, pp. 505-521, 2023, DOI:10.32604/jrm.2022.024872 - 22 September 2022

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 >

Kittithad Wonglekha^1,#, Weerachon Tolek^1,#, Okorn Mekasuwandumrong², Wasu Chaitree², Piyasan Praserthdam¹, Kiat Moon Lee³, Joongjai Panpranot^1,3,4,*

Journal of Renewable Materials, Vol.10, No.8, pp. 2055-2072, 2022, DOI:10.32604/jrm.2022.019680 - 25 April 2022

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

Jinxing Li¹, Jun Zhang^1,*, Yunxia Zhou¹, Zhaoling Zhou¹, Hisham Essawy², Xiaojian Zhou^1,*, Guanben Du¹

Journal of Renewable Materials, Vol.8, No.9, pp. 1019-1032, 2020, DOI:10.32604/jrm.2020.012374 - 03 August 2020

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 >

Arnaud Nicollin¹, Xinjun Li¹, Pierre Girods¹, Antonio Pizzi^1,2,*, 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 >