The influence of thickness and final heat treatment on mechanical properties and dimensional stability of binderless fiberboards from steam exploded Arundo donax L

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

doi:10.1016/j.matpr.2021.12.481

Cited by 2 publications

(3 citation statements)

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“…Untreated AD is generally composed of 29.2–43.1% of cellulose, 19.2–24.3% lignin, and 14.5–32.0% of hemicellulose, depending mainly on age [ 45 , 49 , 50 , 51 ]. The STEX process performed has already been described in other papers [ 44 , 45 , 48 ] and the process parameters used in this study were the pre-treatment temperature (Tr) of 200 °C and the time (tr) of 9.5 min.…”

Section: Methodsmentioning

confidence: 99%

“…The STEX process performed has already been described in other papers [44,45,48] and the process parameters used in this study were the pre-treatment temperature (Tr) of 200 °C and the time (tr) of 9.5 min.…”

Section: Medium Density Fiberboards Manufacturingmentioning

confidence: 99%

“…As a first approach, the mechanical and physical properties of MDF made by mixing STEX-AD and conventional WF in different percentages were studied. Indeed, in several studies [ 42 , 44 , 45 , 48 ], high-quality panels were obtained by using STEX-AD. Thus, the purpose of the present work is to identify any enhancements triggered by treating the material, and whether the lack of the adhesive can be compensated when mixing pretreated and untreated materials.…”

Section: Introductionmentioning

confidence: 99%

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Approaching Self-Bonded Medium Density Fiberboards Made by Mixing Steam Exploded Arundo donax L. and Wood Fibers: A Comparison with pMDI-Bonded Fiberboards on the Primary Properties of the Boards

et al. 2023

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This study presents an unexplored method to produce formaldehyde-free MDF. Steam exploded Arundo donax L. (STEX-AD) and untreated wood fibers (WF) were mixed at different mixing rates (0/100, 50/50, and 100/0, respectively) and two series of boards were manufactured, with 4 wt% of pMDI, based on dry fibers, and self-bonded. The mechanical and physical performance of the boards was analyzed as a function of the adhesive content and the density. The mechanical performance and dimensional stability were determined by following European standards. The material formulation and the density of the boards had a significant effect on both mechanical and physical properties. The boards made solely of STEX-AD were comparable to those made with pMDI, while the panels made of WF without adhesive were those that performed the worst. The STEX-AD showed the ability to reduce the TS for both pMDI-bonded and self-bonded boards, although leading to a high WA and a higher short-term absorption for the latter. The results presented show the feasibility of using STEX-AD in the manufacturing of self-bonded MDF and the improvement of dimensional stability. Nonetheless, further studies are needed especially to address the enhancement of the internal bond (IB).

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