Multi-scale evaluation of the effects of nanoclay on the mechanical properties of wood/phenol formaldehyde bondlines

Wang, Xinzhou; Wang, Siqun; Xie, Xuqin; Zhao, Linguo; Deng, Yonghe; Li, Yanjun

doi:10.1016/j.ijadhadh.2017.01.004

Cited by 28 publications

(10 citation statements)

References 37 publications

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“…The Er and H of extractive-free wood were similar to the ones of control wood cell wall. The Er of wood cell walls were all significantly higher than that of CCML (p < 0.05) in both extractive-free and control wood cell wall, and this observation is in agreement with the literature data [41][42][43]. However, there was no distinct differences in hardness between the cell wall and CCML.…”

Section: Reduced Elastic Modulus and Hardness Of Wood Cell Wallsupporting

confidence: 91%

The Implication of Benzene–Ethanol Extractive on Mechanical Properties of Waterborne Coating and Wood Cell Wall by Nanoindentation

Sun

Yang

et al. 2019

Coatings

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The waterborne coating uses water as its solvent, which will partially dissolve wood extractives when it is applied to wood surfaces. This influences both the coating curing process and the mechanical properties of the cured coating. To investigate these influences, the mechanical properties of waterborne polyacrylic coating on control and extractive-free wood surfaces were investigated by nanoindentation. Reductions to elastic modulus (Er) and hardness (H) of the coating layer was observed in the wood cell walls adjacent to or away from coating layers. Extraction treatment resulted in significant decrease of the Er and H of the coating layer on extractive-free wood surface comparing with control wood, but the values slightly increased for extractive-free wood cell walls compared to a control. Er and H of coating in wood cell lumen were higher than the average value of coating layer on wood surface in both the control and extractive-free wood. The Er of wood cell wall without coating filled in lumen was significantly higher than those of filling with coating. However, there was no distinct difference of H. The Er and H of CCML in extractive-free wood were 15% and 6% lower than those in control ones, respectively.

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Section: Reduced Elastic Modulus and Hardness Of Wood Cell Wallsupporting

confidence: 91%

The Implication of Benzene–Ethanol Extractive on Mechanical Properties of Waterborne Coating and Wood Cell Wall by Nanoindentation

Sun

Yang

et al. 2019

Coatings

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“…The glue layer was able to be clearly observed, and the glue existed in the cell cavity, indicating that the hot oil treatment does not damage the cell wall structure of bamboo parenchyma cells and has little effect on the glue layer. This suggests that oil treatment has no obvious negative influence on the bonding properties of bamboo scrimber [ 14 , 15 ].…”

Section: Resultsmentioning

confidence: 99%

Effects of One-Step Hot Oil Treatment on the Physical, Mechanical, and Surface Properties of Bamboo Scrimber

Yuan

Wang

et al. 2020

Molecules

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Bamboo scrimber is a new type of bamboo-based panel that is prone to be affected by biological and service environments under outdoor conditions. In this paper, the physical and mechanical performance and the microchemical and surface properties of untreated and hot-oil-treated bamboo scrimber were analyzed to illustrate the processing mechanism of scrimber. Methyl silicone oil treatment was carried out at 120, 140, and 160 °C for 2, 4, and 6 h. The density, mechanical properties, air-dried moisture content, surface morphology, chemical structure, swelling properties, color, and contact angle of the bamboo scrimber were analyzed to evaluate the treatment effectiveness. Observation of the environmental-scanning electron microscope indicated that the glue layer of the bamboo scrimber was not significantly damaged after hot oil treatment. At low temperatures, the mechanical properties did not change significantly. Infrared-spectrum analysis showed a significant decrease in mechanical properties at higher temperatures and longer treatment time for the degradation of hemicellulose. The contact angle test and swelling properties test showed that the hot oil treatment improved the dimensional stability and reduced the wettability on the surface of the bamboo scrimber. The above analysis results show that the treatment at 140 °C for 2 h is most effective.

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“…With the decrease of fossil resources, the development of bio-based materials has attracted more attention in the material science and technology [1][2][3][4][5]. Actually, some wood-based materials are widely utilized in our living environment (such as particleboard, plywood, and fiberboard), and these materials are commonly fabricated by synthesis adhesives (such as urea-formaldehyde [6], melamine-formaldehyde [7], phenol-formaldehyde [8,9], etc.). Attributed to the low-cost and excellent properties of these synthetic adhesives, it is hardly to develop the bio-based adhesives that act as consummate substitutes in the wood panel industry [10].…”

Section: Introductionmentioning

confidence: 99%

Investigation and Characterization of Synthesis Conditions on Sucrose-ammonium Dihydrogen Phosphate (SADP) Adhesive: Bond Performance and Chemical Transformation

et al. 2019

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Sucrose is one of the most abundantly available renewable chemicals in the world, and it is expected to be utilized as a raw material for wood-based material products. Herein, a novel adhesion system that was based on sucrose and ammonium dihydrogen phosphate (ADP) was synthesized into an adhesive with 80% solid content, and this eco-friendly was utilized on the fabrication of plywood. The effects of the synthesis conditions on the plywood bond performance and synthesis mechanism were investigated. The optimal synthesis conditions were as follows: the mass proportion between sucrose and ADP was 90/10, the synthesis temperature was 90 °C, and the synthesis time was 3 h. The bonding performance of the plywood that was bonded by optimal SADP adhesive satisfied the GB/T 9846-2015 standard. The chemical analysis was performance tested by using High-Performance Liquid Chromatography (HPLC), Attenuated Total Reflection-Fourier Transform Infrared Spectra (ATR-FTIR), and Pyrolysis Gas Chromatography and Mass Spectrometry (Py-GC/MS) to understand the chemical transformation during the synthesis process. The chemical analysis results confirmed that the hydrolysis and conversation reaction of sucrose occurred in the synthesized SADP adhesive, and ADP promoted the pyrolysis efficiency of sucrose.

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Multi-scale evaluation of the effects of nanoclay on the mechanical properties of wood/phenol formaldehyde bondlines

Cited by 28 publications

References 37 publications

The Implication of Benzene–Ethanol Extractive on Mechanical Properties of Waterborne Coating and Wood Cell Wall by Nanoindentation

The Implication of Benzene–Ethanol Extractive on Mechanical Properties of Waterborne Coating and Wood Cell Wall by Nanoindentation

Effects of One-Step Hot Oil Treatment on the Physical, Mechanical, and Surface Properties of Bamboo Scrimber

Investigation and Characterization of Synthesis Conditions on Sucrose-ammonium Dihydrogen Phosphate (SADP) Adhesive: Bond Performance and Chemical Transformation

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