Oxidized demethylated lignin as a bio-based adhesive for wood bonding

Chen, Xinyi; Xi, Xuedong; Pizzi, A.; Fredon, Emmanuel; Du, Guanben; Gérardin, Christine; Amirou, Siham

doi:10.1080/00218464.2019.1710830

Cited by 73 publications

(48 citation statements)

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“…This might be attributed to the greater moisture content of the wood fibers caused by the increased ALS content, which led to reduced bonds between the lignosulfonate and hardwood fibers for the conditions used in the experiment (press factor of 15 s·mm −1 ). The WA values obtained were significantly better in comparison with previous studies on the use of lignosulfonates as bio-based, formaldehyde-free wood adhesives [ 66 , 67 , 68 , 69 , 70 , 71 , 97 , 98 , 99 ].…”

Section: Resultscontrasting

confidence: 57%

“…Successful attempts have been made to develop eco-friendly wood panels bonded with sustainable “green” adhesives based on modified tannins [ 55 , 56 , 57 ], soy [ 58 , 59 , 60 ], starch [ 61 , 62 ], and lignin [ 63 , 64 , 65 , 66 , 67 , 68 , 69 ]. A common disadvantage of all bio-based binders is the need to apply extended press times and the deteriorated dimensional stability of the ready panels [ 70 , 71 ].…”

Section: Introductionmentioning

confidence: 99%

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Properties of High-Density Fiberboard Bonded with Urea–Formaldehyde Resin and Ammonium Lignosulfonate as a Bio-Based Additive

et al. 2021

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The potential of ammonium lignosulfonate (ALS) as an eco-friendly additive to urea–formaldehyde (UF) resin for manufacturing high-density fiberboard (HDF) panels with acceptable properties and low free formaldehyde emission was investigated in this work. The HDF panels were manufactured in the laboratory with very low UF resin content (4%) and ALS addition levels varying from 4% to 8% based on the mass of the dry wood fibers. The press factor applied was 15 s·mm−1. The physical properties (water absorption and thickness swelling), mechanical properties (bending strength, modulus of elasticity, and internal bond strength), and free formaldehyde emission were evaluated in accordance with the European standards. In general, the developed HDF panels exhibited acceptable physical and mechanical properties, fulfilling the standard requirements for HDF panels for use in load-bearing applications. Markedly, the laboratory-produced panels had low free formaldehyde emission ranging from 2.0 to 1.4 mg/100 g, thus fulfilling the requirements of the E0 and super E0 emission grades and confirming the positive effect of ALS as a formaldehyde scavenger. The thermal analyses performed, i.e., differential scanning calorimetry (DSC), thermal gravimetric analysis (TGA), and derivative thermogravimetry (DTG), also confirmed the main findings of the research. It was concluded that ALS as a bio-based, formaldehyde-free adhesive can be efficiently utilized as an eco-friendly additive to UF adhesive formulations for manufacturing wood-based panels under industrial conditions.

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Section: Resultscontrasting

confidence: 57%

Section: Introductionmentioning

confidence: 99%

Properties of High-Density Fiberboard Bonded with Urea–Formaldehyde Resin and Ammonium Lignosulfonate as a Bio-Based Additive

et al. 2021

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“…Recent developments in the field of sustainable, bio-based adhesives include the use of different renewable biomass feedstocks, such as proteins [ 69 , 70 , 71 , 72 , 73 ], starch [ 74 , 75 ], tannins [ 76 , 77 , 78 ], and lignin [ 17 , 79 , 80 , 81 , 82 , 83 , 84 ]. The development of alternative value-added wood composites that use waste materials or recycled materials is becoming beneficial due to over exploitation of natural resources.…”

Section: Introductionmentioning

confidence: 99%

Eco-Friendly Fiberboard Panels from Recycled Fibers Bonded with Calcium Lignosulfonate

et al. 2021

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The potential of using residual softwood fibers from the pulp and paper industry for producing eco-friendly, zero-formaldehyde fiberboard panels, bonded with calcium lignosulfonate (CLS) as a lignin-based, formaldehyde free adhesive, was investigated in this work. Fiberboard panels were manufactured in the laboratory by applying CLS addition content ranging from 8% to 14% (on the dry fibers). The physical and mechanical properties of the developed composites, i.e., water absorption (WA), thickness swelling (TS), modulus of elasticity (MOE), bending strength (MOR), as well as the free formaldehyde emission, were evaluated according to the European norms. In general, only the composites, developed with 14% CLS content, exhibited MOE and MOR values, comparable with the standard requirements for medium-density fiberboards (MDF) for use in dry conditions. All laboratory-produced composites demonstrated significantly deteriorated moisture-related properties, i.e., WA (24 h) and TS (24 h), which is a major drawback. Noticeably, the fiberboards produced had a close-to-zero formaldehyde content, reaching the super E0 class (≤1.5 mg/100 g), with values, ranging from 0.8 mg/100 g to 1.1 mg/100 g, i.e., equivalent to formaldehyde emission of natural wood. The amount of CLS adhesive had no significant effect on formaldehyde content.

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“…Table 2. Shear strength comparison between the SF/HPH/TGA adhesive and other types of adhesives: 1) MUF resin, [31] 2)Starch/DDSA, [32] 3)tannin-furanic resin, [33] 4)Oxidized lignin-based adhesive, [34] 5)-SF/ PAE, [35] 6) SF/OACL, [35] 7) SF/XSBRL, [36] 8) SM/AE/TGA. [37]…”

Section: Discussionmentioning

confidence: 99%

Effects of Pressure from High‐Pressure Homogenization on the Performance of Soybean Flour Based‐Adhesive

Zhang

Shi

Zhan³

et al. 2020

Macro Materials & Eng

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A green and sustainable soybean flour (SF) adhesive is considered as a potential alternative to toxic formaldehyde‐based resins. Nevertheless, poor bond stability and low bonding strength is caused by the uneven size distribution and low reactivity of SF. Herein, SF adhesives with excellent and stable performance are synthesized via the synergistic action of high‐pressure homogenization (HPH) treatment by incorporating a green crosslinker. Specifically, an even distribution of the SF particles is obtained after the HPH treatment, from which large soy protein molecules are broken to several small and even single protein molecules. In this way, the adhesion stability is improved. Additionally, more active groups buried in proteins are exposed after the HPH treatment due to the unfolding of the protein molecules. Therefore, a more reactive SF is obtained and thus forms a denser crosslinking structure of resultant the adhesive, providing an increase in bonding strength. Particularly, the effects of homogenizing pressure on the adhesive performance are investigated. The results show that a 215.6% increase of wet bonding strength (1.01 MPa) is obtained after the HPH treatment with a homogenizing pressure of 20 MPa, meeting the standards (GB/T 9846‐2015) for interior applications.

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Oxidized demethylated lignin as a bio-based adhesive for wood bonding

Cited by 73 publications

References 50 publications

Properties of High-Density Fiberboard Bonded with Urea–Formaldehyde Resin and Ammonium Lignosulfonate as a Bio-Based Additive

Properties of High-Density Fiberboard Bonded with Urea–Formaldehyde Resin and Ammonium Lignosulfonate as a Bio-Based Additive

Eco-Friendly Fiberboard Panels from Recycled Fibers Bonded with Calcium Lignosulfonate

Effects of Pressure from High‐Pressure Homogenization on the Performance of Soybean Flour Based‐Adhesive

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