Development of high-performance binderless fiberboards from wheat straw residue

Domínguez-Robles, Juan; Tarrés, Quim; Alcalà, Manel; Mansouri, Nour-Eddine El; Rodríguez, Alejandro; Mutjé, Pere; Delgado-Aguilar, Marc

doi:10.1016/j.conbuildmat.2019.117247

Cited by 33 publications

(10 citation statements)

References 53 publications

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“…The manufacturing of fiberboards with better mechanical qualities may be made possible by a high fine contents level. As a result of virgin fines’ strong binding ability and smaller sizes compared to fibers, there is more contact between the fibers [ 66 ].…”

Section: Resultsmentioning

confidence: 99%

Cellulose Nanofibers from Schinus molle: Preparation and Characterization

et al. 2022

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Schinus molle (SM) was investigated as a primary source of cellulose with the aim of discovering resources to generate cellulose nanofibers (CNF). The SM was put through a soda pulping process to purify the cellulose, and then, the fiber was treated with an enzymatic treatment. Then, a twin-screw extruder and/or masuko were utilized to help with fiber delamination during the nanofibrillation process. After the enzymatic treatment, the twin-screw extruder and masuko treatment give a yield of 49.6 and 50.2%, respectively. The optical and atomic force microscopy, morfi, and polymerization degrees of prepared cellulosic materials were established. The pulp fibers, collected following each treatment stage, demonstrated that fiber characteristics such as length and crystallinity varied according to the used treatment (mechanical or enzymatic treatment). Obviously, the enzymic treatment resulted in shorter fibers and an increased degree of polymerization. However, the CNF obtained after enzymatic and extrusion treatment was achieved, and it gave 19 nm as the arithmetic width and a Young’s modulus of 8.63 GPa.

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Section: Resultsmentioning

confidence: 99%

Cellulose Nanofibers from Schinus molle: Preparation and Characterization

et al. 2022

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“…As apparent density values greatly vary, it is interesting to avoid the effects that this parameter has on the mechanical properties simply by dividing the parameter to be evaluated by the apparent density value obtained. 36,37 Specific mechanical properties of the formulated TDI bio-RPUFs and MDI bio-RPUFs are shown in Figure 6 and Figure 7, respectively. It was observed that these properties continued to increase despite the removal of the density effect.…”

Section: Bio-rpufs Visual Aspect Density and Mechanical Propertiesmentioning

confidence: 99%

Insulating rigid polyurethane foams from laurel tree pruning based polyol

Rincón

Balu

Luque

et al. 2020

J of Applied Polymer Sci

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The present work deals with the production of a natural polyol from laurel tree pruning waste, aiming the preparation of polyurethane foams. The obtained bio-polyol was characterized and applied into foams studying the influence of the isocyanate used and the addition of the physical blowing agent. The incorporation of the polyol allowed 40% polyol substitution for those foams in which TDI was used, and up to 60% using MDI. Apparent density, cell morphology, mechanical, and thermal properties were evaluated. Mechanical and thermal properties of the foams improve to a greater amount of polyol in the matrix. Specifically, the best thermal and mechanical properties (274.99 and 7275.91 kPa for compressive strength and Young Modulus, respectively) were obtained with 50% polyol substitution (0.63 R NCO/OH). Foams showed small, well-defined cell morphology. Laurel derived polyol can be used for the preparation of foams using MDI, since the mechanical, and thermal properties are promising for obtaining insulation materials in the construction industry.

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“…30 Traditionally, the use of wheat straw requires shredding, which, to some extent, destroys the natural advantages of a highly oriented structure. 31 Some researchers adopted the bottom-up method to prepare functional materials from straw bers. 32,33 For example, Qi et al mechanically crushed and high-pressure homogenized wheat straw and poplar residue to obtain nanocellulose.…”

Section: Introductionmentioning

confidence: 99%