Plasma Treatment Induced Chemical Changes of Alkali Lignin to Enhance the Performances of Lignin-Phenol-Formaldehyde Resin Adhesive

Wu, Zhigang; Chen, Sicheng; Liang, Jiankun; Li, Lifen; Xi, Xuedong; Deng, Xue; Zhang, Bengang; Lei, Hong

doi:10.32604/jrm.2021.016786

Cited by 8 publications

(2 citation statements)

References 35 publications

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“…The peak at 1271 cm −1 is due to stretching vibrations of the C–O–C ether linkages. A weak peak located at 1150 cm −1 is attributed to stretching vibrations of the C–C bonds of phenol [ 40 ].…”

Section: Results–discussionmentioning

confidence: 99%

Particleboards with Recycled Material from Hemp-Based Panels

Papadopoulou,

Chrysafi,

Karidi

et al. 2023

Materials

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This research addresses the current need for sustainable solutions in the construction and furniture industries, with a focus on environmentally friendly particleboard. Particleboards were made from a mixture of virgin wood chips and hemp shives, which were then mechanically recycled and used to make new lightweight particleboards. Phenol–formaldehyde resin with 25% w/w phenol replacement by soybean flour (PFS) was used as the binder for the lignocellulosic materials. Laboratory analyses determined the resin properties, and FTIR confirmed the structure of the experimental PFS resin. The thermal properties of all the resins were evaluated using thermogravimetric analysis (TGA). The panels were manufactured using industrial simulation and tested for mechanical and physical properties in accordance with European standards. The FTIR study confirmed good adhesion, and the TGA showed improved thermal stability for the recycled biomass panels compared to virgin biomass panels. The study concludes that lightweight particleboards can be successfully produced from recycled hemp shive-based panels, providing a sustainable alternative to traditional materials in the construction industry.

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Section: Results–discussionmentioning

confidence: 99%

Particleboards with Recycled Material from Hemp-Based Panels

Papadopoulou,

Chrysafi,

Karidi

et al. 2023

Materials

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“…This indicated the degradation of lignin, and chemical bonds were broken. The peak at 1638 cm shifted to 1659 cm −1 , manifesting that the peculiar aromatic ring structure of lignin provided a gathering place for lone pair electrons and plasma oxidated hydroxyl into conjugated carbonyl, which improved electron density and enhanced reactivity [43].…”

Section: Analysis Of Cross-linking Reaction Between Pinus Massoniana ...mentioning

confidence: 99%

Effects of Plasma Treatment on the Surface Characteristics and Bonding Performance of Pinus massoniana Wood

Liang

et al. 2023

Forests

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Rosin has a great influence on the bonding of Pinus massoniana wood, and surface modification is an important way to solve this problem. In this study, Pinus massoniana wood was treated by plasma, and the effects of plasma treatment on the bonding performance and surface characteristics were investigated. The results showed the following: (1) After plasma treatment, the contact angle of Pinus massoniana wood was significantly reduced and the surface energy was significantly increased from 28.42 × 10−7 to 74.75 × 10−7 J·cm−2, and the surface wettability was also greatly improved. (2) Plasma high-energy particles experience simultaneous physical and chemical effects on the surface of Pinus massoniana wood. The former formed a micro-etched roughness on the wood surface and led to the increase in surface dispersion force, while the latter increased the aggregation and activity of polar groups on the wood surface and the degradation of some wood components and rosin, resulting in the increase in surface polar force and the enhancement of wettability. (3) After plasma treatment, the reactivity of wood was enhanced, and the cross-linking degree with adhesive and the heat release were increased. The bonding strength of Pinus massoniana wood could be improved: dry bonding from 5.08 to 5.38 MPa, boiling-water bonding strength from 4.12 to 4.53 MPa, cold-water bonding strength from 3.84 to 4.51 MPa, and the bonding stability and reliability of glued specimens were also improved.

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Preparation of spherical porous carbon from lignin-derived phenolic resin and its application in supercapacitor electrodes

Yang

Duan

et al. 2023

International Journal of Biological Macromolecules

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Plasma Treatment Induced Chemical Changes of Alkali Lignin to Enhance the Performances of Lignin-Phenol-Formaldehyde Resin Adhesive

Cited by 8 publications

References 35 publications

Particleboards with Recycled Material from Hemp-Based Panels

Particleboards with Recycled Material from Hemp-Based Panels

Effects of Plasma Treatment on the Surface Characteristics and Bonding Performance of Pinus massoniana Wood

Preparation of spherical porous carbon from lignin-derived phenolic resin and its application in supercapacitor electrodes

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