Binderless fiberboards for sustainable construction. Materials, production methods and applications

Vitrone, Federica; Ramos, Diego; Ferrando, Francesc; Salvadó, Joan

doi:10.1016/j.jobe.2021.102625

Cited by 32 publications

(23 citation statements)

References 133 publications

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“…Para la fabricación de este tipo de aglomerados se distingue el proceso de formación en húmedo; durante la termocompresión el hidrogeno en el agua permite mejorar el comportamiento adhesivo de la lignina a través de su ablandamiento (Vitrone et al, 2021).…”

Section: Aglomerados Sin Adhesivos Sintéticosunclassified

Elaboración de tableros aglomerados auto adheridos a partir de residuos agroindustriales

Garcia

Ruiz

2022

ICBI

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La mayoría de los aglomerados para la construcción utilizan resinas plásticas basadas en compuestos tóxicos que se aplican a espacios cerrados y disminuyen la calidad del aire interior, además de ser considerados cancerígenos. No obstante, la creciente demanda de estos materiales por la construcción tras la acelerada urbanización, así como el limitado recurso forestal del que se obtienen hacen que sea fundamental buscar otro tipo de alternativas más amigables con el medio ambiente. Bajo esta premisa, se tuvo como objetivo desarrollar un compuesto aglomerado auto adherido para su uso como tableros de muros divisorios interiores mediante el aprovechamiento del desecho agroindustrial de la industria del aceite de palma y fibras de coco. La conformación del aglomerado se realizó mediante un proceso de termo compresión que permitió el ablandamiento de la lignina, lo que sirvió de aglutinante para las fibras y les confirió de rigidez sin la necesidad de utilizar adhesivos sintéticos.

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Section: Aglomerados Sin Adhesivos Sintéticosunclassified

Elaboración de tableros aglomerados auto adheridos a partir de residuos agroindustriales

Garcia

Ruiz

2022

ICBI

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“…2 However, the development of composite products depends on synthetic adhesives (mostly formaldehyde-based 3 ) manufactured from non-sustainable fossil resources. The International Agency for Research on Cancer 4 classifies formaldehyde as a category 1B carcinogen; therefore, studies related to wood utilization 5 have focused on the elimination of synthetic resin and the production of energy-saving and environmentally friendly lignocellulosic composites. General explanations of lignocellulosic self-bonding theories have been widely proposed, 6 including lignin−furfural linkages, 7 lignin condensation reactions, 8 self-polymerizing hemicellulose decomposition products, 9 and free radical initiation.…”

Section: ■ Introductionmentioning

confidence: 99%

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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“…Another important challenge of the WBP industry is the continuously changing raw material situation due to the global changes in the forest area, high competition, and growing demand for WBP production [ 1 ]. Therefore, agricultural lignocellulosics as nonfood by-products are very attractive from an economic and sustainability perspective for developing particleboards [ 6 ], particularly as binder-less boards [ 7 , 8 , 9 ]. This type of board consists of only a selected lignocellulosic that is mechanically processed by shredding and then hot-pressed under certain conditions at which lignin starts to melt and interact with other constituents, resulting in a binder-less composite.…”

Section: Introductionmentioning

confidence: 99%

Qualitative Differences and Emission Persistence of Volatile Organic Compounds from Bio-Based Particleboards

et al. 2022

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An attempt to reduce, replace, or even eliminate the synthetic resins from wood-based panels alongside broadening the array of raw lignocellulosics is still essential and attractive. Many pretreatments of lignocellulosics have been studied, among which steam explosion (SE) resulted in superior physical-mechanical properties of the obtained binder-less boards. However, the SE pretreatment leads to a relatively strong odor, which is even emitted from the obtained binder-less boards independent of the raw lignocellulosic, raising concern about the use of the boards. Emissions of volatile organic compounds (VOCs) were investigated in the framework of the study from binder-less boards obtained from different SE raw lignocellulosics and SE-untreated suberinic acids-bonded particleboard. VOCs were collected by headspace solid-phase microextraction (HS-SPME) and analyzed by gas chromatography–mass spectrometry (GC–MS) for 28 days with an interval of 2 weeks. The results showed that the number of detected VOCs and their chromatographic peak area varied significantly depending on the raw lignocellulosic, board density, and post-treatment (overlayering), decreasing over time. The lowest area of detected VOCs was demonstrated by the suberinic acids-bonded particleboard, while the highest area was detected from the high-density binder-less board obtained from SE hemp shives with the main compound of furfural (up to 70%) in all board types.

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Binderless fiberboards for sustainable construction. Materials, production methods and applications

Cited by 32 publications

References 133 publications

Elaboración de tableros aglomerados auto adheridos a partir de residuos agroindustriales

Elaboración de tableros aglomerados auto adheridos a partir de residuos agroindustriales

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

Qualitative Differences and Emission Persistence of Volatile Organic Compounds from Bio-Based Particleboards

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