Thermal Condensation of Dehydrogenation Polymer (DHP) with Xylose

Conventional adhesives used in wood-based panels typically contain volatile organic compounds, including formaldehyde, which can potentially lower indoor air quality and damage human health. Lignin, a natural adhesive present in wood, offers significant advantages over other materials due to its rea...

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Bibliographic Details
Published in:Polymers 2024-11, Vol.16 (22), p.3139
Main Authors: Wang, Peng, Xie, Jiaju, Peng, Wenyao, Xie, Junxian, An, Junjian, Zhang, Guangyan, Chen, Junjun
Format: Article
Language:English
Subjects:
Adhesive bonding
Adhesives
Air quality
Air quality management
Aromatic compounds
Bond strength
Catalytic oxidation
Condensation polymerization
Dehydrogenation
Enzymes
Formaldehyde
Fourier transforms
Hot pressing
Hydrocarbons
Hydroxyl groups
Indoor air pollution
Indoor air quality
Lignin
Monosaccharides
NMR
Nuclear magnetic resonance
Outdoor air quality
Panels
Phenols
Polymers
Quinones
Sugars
VOCs
Volatile organic compounds
Water resistance
Xylose
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Summary:Conventional adhesives used in wood-based panels typically contain volatile organic compounds, including formaldehyde, which can potentially lower indoor air quality and damage human health. Lignin, a natural adhesive present in wood, offers significant advantages over other materials due to its ready availability, renewable nature, rich aromatic rings, and aliphatic and aromatic hydroxyl groups, as well as quinone groups. However, when modified as an adhesive for wood-based panels, lignin suffers from poor water resistance and formaldehyde release. Dehydrogenation polymer (DHP), as a lignin model compound, possesses a structure similar to lignin and excellent water resistance, making it a potential substitute for lignin as a formaldehyde-free adhesive. A DHP-xylose complex was obtained from a condensation reaction between DHP and xylose in hemicellulose in a simulated hot-pressing environment. The feasibility of DHP bonding with hemicellulose components was verified using FT-IR and NMR spectroscopic methods. In addition, the structure of the adduct and condensation process were also studied. DHP and xylose underwent condensation under simulated hot-pressing conditions. Xylose and DHP may be linked by C-C bonds. The thermal condensation of DHP with xylose was investigated. This may contribute to a better understanding of the adhesive bonding process for xylose during hot-pressing and offer support for practical applications.
ISSN:2073-4360
2073-4360
DOI:10.3390/polym16223139