Immobilization of ferric tannate on wood fibers to functionalize wood fibers/diphenylmethane di-isocyanate composites

Lin, Qiuqin; Wu, Jiangyuan; Yu, Yanglun; Huang, Yuxiang; Yu, Wenji

doi:10.1016/j.indcrop.2020.112753

Cited by 17 publications

(12 citation statements)

References 41 publications

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“…The moisture absorption rate of DALF-0% was higher than that of DALF-10%. The MAC of DALF-0% was approximately 3% and that of DALF-10% was only 1%, which was significantly lower than the reported data (8.5%) . As illustrated in the curves, dialdehyde self-bonding composites with higher water involvement demonstrated distinctive moisture release capacity, that is, approximately 1 and 4% of that of DALF-20% and DALF-30%, respectively.…”

Section: Resultsmentioning

confidence: 54%

“…As shown in Figures c and S8 (Supporting Information), the hardness of DALF-30%, measured using Berkovich probe at a depth of 2000 nm, was 1.0 GPa, which was approximately 3.1 and 12.5 times that of DALF-0% and the LF, respectively. Moreover, DALF-30% demonstrated excellent results in comparison to the reported fiberboard hardness …”

Section: Resultsmentioning

confidence: 76%

“…The MAC of DALF-0% was approximately 3% and that of DALF-10% was only 1%, which was significantly lower than the reported data (8.5%). 37 As illustrated in the curves, dialdehyde self-bonding composites with higher water involvement demonstrated distinctive moisture release capacity, that is, approximately 1 and 4% of that of DALF-20% and DALF-30%, respectively. This indicates that plasticizing self-bonding composites presented better water resistance property.…”

Section: ■ Introductionmentioning

confidence: 90%

“…Moreover, DALF-30% demonstrated excellent results in comparison to the reported fiberboard hardness. 37 Unlike those of the untreated lignocellulosic board which exhibited linear deformation, the tensile stress−shift curves of dialdehyde composites (DALF-X %) exhibited yield deformation (Figure S9, Supporting Information). The yield ratio can be defined as the ratio of yield strength to tensile strength, which remained almost unchanged, ranging from 0.17 to 0.27 from non-water to 30%, respectively, as shown in Figure 3d.…”

Section: ■ Introductionmentioning

confidence: 99%

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High-Performance Lignocellulosic Self-Bonding Composites via Dialdehyde Modification and Water-Involved Low-Temperature Hot Pressing

Zhang

Chen

et al. 2022

ACS Sustainable Chem. Eng.

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Novel lignocellulosic self-bonding materials with high performance and low hygroscopicity are still in demand in the wood industry. We demonstrated a facile and efficient approach to prepare adhesive-free all-lignocellulosic composites with excellent performances via the dialdehyde modification replacing the conventional hydrogen groups. Less than 30% water involved as the plasticizer could successfully optimize the performances of self-bonding composites and, more importantly, realize low-temperature hot pressing at 75 °C. The internal sectional morphology showed that individual wood fiber cells collapsed, and lignin was repolymerized with hemicellulose and cellulose to enhance interfacial bonding. Chemical analysis demonstrated the intra-and intermolecular association of dialdehyde groups. The self-assembly lignocellulosic composites were superior to most of the reported adhesive-free bio-fiber materials, demonstrating better flexural strength (93.7 MPa), internal bond strength (6.2 MPa), tensile strength (20.2 MPa), and hardness (1.0 GPa). Thus, this technology can be extended to different wood species. The thickness swelling rate of lignocellulosic self-bonding composites was only 2.1% after soaking in water for 24 h. In addition, the adhesive-free lignocellulosic composites exhibited plastic body-like behavior and excellent machinability. The applications of all-lignocellulosic self-bonding composites can be extended to high-strength structural buildings and outdoor household material fields, which aligns with the concepts of eco-friendliness, degradation, and carbon storage.

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Section: Resultsmentioning

confidence: 54%

Section: Resultsmentioning

confidence: 76%

Section: ■ Introductionmentioning

confidence: 90%

Section: ■ Introductionmentioning

confidence: 99%

See 2 more Smart Citations

High-Performance Lignocellulosic Self-Bonding Composites via Dialdehyde Modification and Water-Involved Low-Temperature Hot Pressing

Zhang

Chen

et al. 2022

ACS Sustainable Chem. Eng.

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“…Isocyanates with a highly active functional group of −NCO could react with compounds containing active hydrogen atoms (amine, alcohol, water, etc. ), widely used as coupling agents for the surface treatment of glass, carbon, and natural fibers. − Toluene diisocyanate (TDI), methylenediphenyl diisocyanate, hexamethylene diisocyanate, and isophorone diisocyanate are common isocyanates used in industries. With double −NCO groups, TDI could be used as a coupling agent and cross-link with different compounds or molecular chains.…”

Section: Introductionmentioning

confidence: 99%

Unsaturated Polyester Resin as a Nonformaldehyde Adhesive Used in Bamboo Particle Boards

Aladejana

Liu

et al. 2022

ACS Omega

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Unsaturated polyester resin (UPR) with good chemical resistance, excellent mechanical properties, and formaldehyde-free shows great potentials in the wood industry. In this study, the mechanical strength, thermostability, dynamic thermomechanical property, and interfacial bonding of bamboo particle boards (BPBs) made from UPR adhesives with toluene diisocyanate (TDI) as the coupling agent were explored. The results showed that covalent bonds were formed among TDI, bamboo particles, and UPR, which could significantly enhance the mechanical strength. The internal bonding strength, modulus of elasticity, and modulus of rupture of treated BPBs were 1.36, 3010, and 19.6 MPa with the increment of 1250, 514, and 833%, respectively, compared to the control samples. Also, the thickness swelling rate of the BPB was 4.6%, much lower than that of the control, with a decrease of 92%. The thermostability of the treated BPB was also improved. As a result, the BPB using UPR as the adhesive and TDI as the coupling agent shows better usability, higher efficiency, and excellent mechanical strength.

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Developing polylactic acid (PLA)-based medium-density fiberboard: investigating three key manufacturing factors and their impact on physical and mechanical properties

Bencsik,

Denes,

Kollar

et al. 2024

Eur. J. Wood Prod.

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Immobilization of ferric tannate on wood fibers to functionalize wood fibers/diphenylmethane di-isocyanate composites

Cited by 17 publications

References 41 publications

High-Performance Lignocellulosic Self-Bonding Composites via Dialdehyde Modification and Water-Involved Low-Temperature Hot Pressing

High-Performance Lignocellulosic Self-Bonding Composites via Dialdehyde Modification and Water-Involved Low-Temperature Hot Pressing

Unsaturated Polyester Resin as a Nonformaldehyde Adhesive Used in Bamboo Particle Boards

Developing polylactic acid (PLA)-based medium-density fiberboard: investigating three key manufacturing factors and their impact on physical and mechanical properties

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