Enhancing wood stability and fire retardancy through citric acid and phosphorylated sucrose stearate cross-linking modification

Dong, Youming; Xue, Qiuxia; Fu, Zhenyu; Yan, Yutao; Lu, Yun; Liu, Yuanqiang; Li, Jianzhang

doi:10.1016/j.conbuildmat.2023.131946

Cited by 9 publications

(3 citation statements)

References 51 publications

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“…Cone calorimetry was performed using a TCC cone calorimeter (NETZSCH, Germany), which conforms to ISO 5660-1. 24 Each wooden sample was enveloped in aluminum foil and subjected to irradiation at an external heat flux of 50 kW/m2. Parameters such as the heat release rate (HRR) and total heat release rate (THR) were recorded.…”

Section: Thermal Properties Of Hbpe-cs Adhesivementioning

confidence: 99%

Development of a Boiling Water Resistant, Flame Retardant, and Mildew Resistant Multifunctional Adhesive Cross-Linked with Chitosan and Biomass Polyester

Huang,

Yang,

Yang

et al. 2024

ACS Sustainable Chem. Eng.

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Recently, the investigation into sustainable adhesives for wood composites has garnered significant attention. However, a notable limitation of biobased adhesives lies in their susceptibility to mildew growth and degradation. Chitosan, being the second most abundant biopolymer on Earth, featuring a multitude of functional groups and inherently possessing antimicrobial properties, has emerged as a compelling candidate to address this challenge. In this study, we devised a novel biomassderived polyester, which was subsequently cross-linked with chitosan and amino trimethylene phosphonic acid in a streamlined one-pot process. This innovative approach yielded a versatile adhesive that exhibits resistance to boiling water, flame retardancy, and mildew inhibition. The adhesive's exceptional shear strength, when applied to materials such as wood, bamboo, and glass, stems from its robust cross-linking network comprising ester, carbon−nitrogen double bonds, amides, and hydrogen bonds. Notably, when subjected to a 3 h immersion in boiling water, the adhesive demonstrated a remarkable wet strength of 1.43 MPa on wood, vastly exceeding the minimum threshold of 0.7 MPa specified by the Chinese national standard (GB/T 9846-2015) for plywood. Additionally, this adhesive imparted flame-retardant properties to wood composites, thereby broadening the scope of multifunctional biobased adhesives applicable across industries encompassing manufacturing, construction, and furniture sectors.

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Section: Thermal Properties Of Hbpe-cs Adhesivementioning

confidence: 99%

Development of a Boiling Water Resistant, Flame Retardant, and Mildew Resistant Multifunctional Adhesive Cross-Linked with Chitosan and Biomass Polyester

Huang,

Yang,

Yang

et al. 2024

ACS Sustainable Chem. Eng.

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“…Citric acid (CA) is commonly used as a green, water-soluble, and cost-effective cross-linker to enhance the physical and mechanical properties of plantation wood. − The carboxyl group in CA first formed a cyclic anhydride, which subsequently reacted with the hydroxyl group in the wood component . Dong et al modified wood with CA and achieved an ASE value of 41% at a WPG of 14.55%. The 57% ASE was reached when 18% WPG of CA was used to treat beech wood…”

Section: Introductionmentioning

confidence: 99%

“…24−27 The carboxyl group in CA first formed a cyclic anhydride, which subsequently reacted with the hydroxyl group in the wood component. 28 Dong et al 29 modified wood with CA and achieved an ASE value of 41% at a WPG of 14.55%. The 57% ASE was reached when 18% WPG of CA was used to treat beech wood.…”

Section: Introductionmentioning

confidence: 99%

Cell Wall Modification Based on Combination Reagents to Improve Dimensional Stability of Wood with High Efficiency

Qiu,

Hu,

et al. 2024

J. Agric. Food Chem.

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Although γ-methacryloxypropyltrimethoxysilane (MPS) was proved to be an effective reagent for improving the dimensional stability of wood, a bottleneck in ASE value (around 50%) existed. The reason was that MPS with low polarity opened few hydrogen bonds in the amorphous region of cellulose, while these hydrogen bonds could be reopened by water. Therefore, citric acid (CA) is chosen to cooperate with MPS to further enhance the dimensional stability of wood. In this paper, MPS and CA were used to modify wood individually (MW and CW) or with different combinations, that is, one-step modification (M/CW) and twostep modification with MPS first (M-CW) or CA first (C-MW). CA and MPS concentrations were optimized at 5 wt%. The ASE value for M/CW was only 25.74% at a weight percent gain (WPG) of 6.43%, which was only 0.6 times to MW or 0.7 times to CW. For M-CW, the ASE value gradually decreased with the soaking cycles, from 65.64% at a WPG of 9.05% to 51.20%. The C-MW had the best dimensional stability, with the ASE value 75.35% at a WPG of 11.50%. Although it decreased during the first soaking cycle, it stabilized at 62.20% at last. SEM and EDS images showed that the polymer mainly distributed in cell walls and few in cell lumen in C-MW. Thus, the enhanced dimensional stability of C-MW could be explained by CA opening the hydrogen bonds in the amorphous region of cellulose first, which provided more binding sites for MPS.

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Production of insulation material using styrene acrylic resin from animal and agricultural waste part 2: Mechanical properties, fire retardant, acoustic properties

Erkmen,

Hamamci,

Yakut

2024

Construction and Building Materials

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Enhancing wood stability and fire retardancy through citric acid and phosphorylated sucrose stearate cross-linking modification

Cited by 9 publications

References 51 publications

Development of a Boiling Water Resistant, Flame Retardant, and Mildew Resistant Multifunctional Adhesive Cross-Linked with Chitosan and Biomass Polyester

Development of a Boiling Water Resistant, Flame Retardant, and Mildew Resistant Multifunctional Adhesive Cross-Linked with Chitosan and Biomass Polyester

Cell Wall Modification Based on Combination Reagents to Improve Dimensional Stability of Wood with High Efficiency

Production of insulation material using styrene acrylic resin from animal and agricultural waste part 2: Mechanical properties, fire retardant, acoustic properties

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