Dimensional stability mechanisms of binderless boards by heat or steam treatment: a review

Marbun, Sari Delviana; Dwianto, Wahyu; Meliala, Susan Barbara Patricia Sembiring; Widyorini, Ragil; Augustina, Sarah; Hiziroglu, Salim

doi:10.1007/s10570-023-05429-9

Cited by 5 publications

(1 citation statement)

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“…The pretreatment methods were based on reference [18] with slight modifications. First, 20 g of dilute acid-pretreated wheat straw was soaked in a 200 mL solution of 6.9% w/v citric acid and 6.5% w/v sodium dihydrogen phosphate at room temperature and atmospheric pressure for 4 h. Following this, the product was vacuum filtered and rinsed with deionized water until the filtrate achieved a neutral pH.…”

Section: Surface Modification-citric Acidmentioning

confidence: 99%

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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Section: Surface Modification-citric Acidmentioning

confidence: 99%