Effect of hot-pressing temperature on characteristics of alkali pretreated reed straw bio-board

Xiao, Liguang; Ding, Yuting; Yan, Gang

doi:10.1080/02773813.2021.1949351

Cited by 10 publications

(7 citation statements)

References 31 publications

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“…Therefore, the results in Figure 4 were only for reference, and the detailed producing parameters were listed in Table S5. The IBS and MOR of RPs were higher than those of other RPs, which met the standard of heavy‐duty load bearing particleboard 17,23,27–29 . Many straw‐based particleboards with weak bonding strength were owing to the low rigidity of materials, which was usually blended with wood particles to improve the strength 17 .…”

Section: Resultsmentioning

confidence: 92%

“…The IBS and MOR of RPs were higher than those of other RPs, which met the standard of heavy-duty load bearing particleboard. 17,23,[27][28][29] Many straw-based particleboards with weak bonding strength were owing to the low rigidity of materials, which was usually blended with wood particles to improve the strength. 17 MOR and IBS of RPs were obviously higher than those of many other non-woodbased particleboards and even particleboards made from wood.…”

Section: Mechanical Strength Of Rpsmentioning

confidence: 99%

“…Like other lignocelluloses, reed consists mainly of three biopolymer components, cellulose, hemicelluloses, and lignin (Figure S1), forming complex and rigid cell wall structure 21 . For this reason, reed has also been tried to prepare panels as the wood substitute in particleboard preparation 4,17,22,23 . Compared with ordinary wood‐based particleboard, reed‐based particleboard has the advantages of light color, fine material, and no irritating smell.…”

Section: Introductionmentioning

confidence: 99%

“…21 For this reason, reed has also been tried to prepare panels as the wood substitute in particleboard preparation. 4,17,22,23 Compared with ordinary wood-based particleboard, reed-based particleboard has the advantages of light color, fine material, and no irritating smell. Compared with straw-based particleboards, reed-based particleboards (RPs) have the advantages of concentrated producing areas and lower ash content.…”

Section: Introductionmentioning

confidence: 99%

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Sieving and hydrothermal pre‐treatments for preparing ultra‐high mechanical strength particleboard

Zhou

Pang

Cao

et al. 2023

J of Applied Polymer Sci

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The application of non woody biomass materials in the manufacture of wood‐based panels has been confirmed as an efficient carbon sequestration approach. In this study, reed straw was recommended to produce reed‐based particleboards (RPs). Sieving and hydrothermal pre‐treatments were conducted on the inner layer reed particles to reduce the adverse influence of the waxy layer on the mechanical strength of RPs. The thickness swelling rate was merely 1.04% (2 h), and the internal bonding strength could reach up to 0.88 MPa, which met the ISO requirements for heavy‐duty load bearing in dry conditions (P‐HLB REG). More importantly, this study constructed the plate forming process that retains the natural morphological characteristics of reed to the maximum extent. Generally, the mechanical strength of RPs was markedly higher than mostly straw‐based and even wood‐based panels. The static bending strength of RPs could reach 35.6 MPa after sieving pre‐treatment. In addition, according to the LCA, the net carbon flux could reach −1227.55 kg CO2 eq. when producing 1 m3 RPs. The obtained RPs could be utilized as wood substitutes to produce furniture and building materials with promising environmental and economic benefits.

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Section: Resultsmentioning

confidence: 92%

Section: Mechanical Strength Of Rpsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Sieving and hydrothermal pre‐treatments for preparing ultra‐high mechanical strength particleboard

Zhou

Pang

Cao

et al. 2023

J of Applied Polymer Sci

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“…The remarkable difference in tensile strength observed between glutaraldehyde-modified samples and the other two groups can be primarily attributed to the highly crosslinked network formed by the etherification reaction between glutaraldehyde and dilute acid-pretreated wheat straw. Compared to the mechanical strength of straw boards prepared by other methods without adhesive [22,[26][27][28][29], there remains a discernible gap in the mechanical properties of wheat straw boards prepared through the combined dilute acid pretreatment and surface modification. Nevertheless, the present study shows that the integration of these two processes can significantly improve the mechanical strength of wheat straw boards without the need for adhesives.…”

Section: Effects Of Surface Modification On the Mechanical Properties...mentioning

confidence: 98%

Preparation of Wheat Straw Hot-Pressed Board through Coupled Dilute Acid Pretreatment and Surface Modification

Wang,

Zhang,

Xiao

et al. 2024

Materials

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The production of wheat straw waste board materials encounters challenges, including inadequate inherent adhesiveness and the utilization of environmentally harmful adhesives. Employing a hot-pressed method for converting wheat straw into board materials represents a positive stride towards the resourceful utilization of agricultural wastes. This study primarily focuses on examining the influence of hot-pressing process conditions on the mechanical properties of wheat straw board materials pretreated with dilute acid. Additionally, it assesses the necessity of dilute acid treatment and optimizes the hot-pressing conditions to achieve optimal results at 15 MPa, 2 h, and 160 °C. Furthermore, a comprehensive process is developed for preparing wheat straw hot-pressed board materials by combining dilute acid pretreatment with surface modification treatments, such as glutaraldehyde, citric acid, and rosin. Finally, a thorough characterization of the mechanical properties of the prepared board materials is conducted. The results indicate a substantial improvement in tensile strength across all modified wheat straw board materials compared to untreated ones. Notably, boards treated with glutaraldehyde exhibited the most significant enhancement, achieving a tensile strength of 463 kPa, bending strength of 833 kPa, and a water absorption rate of 14.14%. This study demonstrates that combining dilute acid pretreatment with surface modification treatments effectively enhances the performance of wheat straw board materials, offering a sustainable alternative to traditional wood-based board materials.

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The suitability of common reed (Phragmites australis) for load-bearing structural materials

Albrecht,

Neudecker,

Veigel

et al. 2023

J Mater Sci

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Besides wood, the most widely used natural structural material, dicotyledonous fibre plants such as flax or hemp, and monocotyledonous grasses such as cereal straw or bamboo have been shown to be suitable for application in materials. Common reed is a less well-characterised plant resource in this regard. Therefore, common reed stems were characterised in uniaxial tension in the present study, aiming at acquiring basic information about the mechanical characteristics of this material. Furthermore, laboratory-scale composite beams were manufactured and tested in bending. Compared to wood species with similar density, common reed stem walls showed a comparable average modulus of elasticity of 8 GPa and a very good average tensile strength of 150 MPa. After a mild alkali pre-treatment, reed showed excellent adhesive bonding, enabling the manufacture of high-density composite beams with roughly 130 MPa bending strength and 12–13 GPa modulus of elasticity. Same as untreated common reed stem walls, also reed biocomposite beams compared very favourably with established wood-based materials of similar structure, density, and adhesive content. In summary, it was thus demonstrated that common reed is a highly suitable raw material for bio-based load-bearing structural materials.

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Effect of hot-pressing temperature on characteristics of alkali pretreated reed straw bio-board

Cited by 10 publications

References 31 publications

Sieving and hydrothermal pre‐treatments for preparing ultra‐high mechanical strength particleboard

Sieving and hydrothermal pre‐treatments for preparing ultra‐high mechanical strength particleboard

Preparation of Wheat Straw Hot-Pressed Board through Coupled Dilute Acid Pretreatment and Surface Modification

The suitability of common reed (Phragmites australis) for load-bearing structural materials

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