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Synthesis of Strong Adhesive Hydrogel, Gelatin O-Nitrosobenzaldehyde
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Synthesis of Humin-Phenol-Formaldehyde Adhesive
Shimin Kang1, Jinxia Fu2, Gang Zhang3
1Guangdong Provincial Key Laboratory of Distributed Energy Systems, Dongguan University of Technology, Dongguan 523808, China. kangshimin@dgut.edu.cn.
Polymers
|April 12, 2019
Summary
Humins, byproducts of biomass processing, were used to create a new phenol-formaldehyde adhesive. This sustainable humin-phenol-formaldehyde adhesive (HPFA) meets national standards for performance.
Area of Science:
- Materials Science
- Green Chemistry
- Polymer Chemistry
Background:
- Humins are low-value byproducts generated during biomass acid hydrolysis.
- Traditional phenol-formaldehyde adhesives rely on non-renewable phenol.
- Valorization of biomass byproducts is crucial for sustainable chemical processes.
Purpose of the Study:
- To investigate the use of humins as a partial replacement for phenol in phenol-formaldehyde adhesives.
- To develop a modified phenol-formaldehyde adhesive using humins.
- To evaluate the physicochemical properties of the novel humin-phenol-formaldehyde adhesive (HPFA).
Main Methods:
- A two-step synthesis process was employed.
- Humins were first solubilized into phenolics via hydrothermal treatment.
- The resulting alkaline soluble products reacted with phenol and formaldehyde to form HPFA.
Main Results:
- The synthesized humin-phenol-formaldehyde adhesive (HPFA) exhibited favorable physicochemical properties.
- Key properties including viscosity, bonding strength, pH, free formaldehyde, free phenol, and solid content were assessed.
- The performance of HPFA met the stringent requirements of the GB/T 14732-2006 Chinese National Standard.
Conclusions:
- Humins can be effectively utilized as a phenol substitute in the synthesis of modified phenol-formaldehyde adhesives.
- The developed HPFA demonstrates comparable performance to conventional adhesives, offering a sustainable alternative.
- This research highlights a promising pathway for valorizing humin byproducts in the production of high-performance adhesives.
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