Aging Resistance Properties of Poplar Plywood Bonded by Soy Protein-Based Adhesive

Zeng, Xiangling; Luo, Jing; Hu, Jihang; Li, Jianzhang; Gao, Qiang; Li, Li

doi:10.15376/biores.11.2.4332-4341

Cited by 10 publications

(6 citation statements)

References 4 publications

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“…Hydrogen bonds recombined or broken, the bonding structure lost or absorbed moisture, and the bonding strength increased or decreased. They changed according to the different test environments, and affected the bonding structure, resulting in irregular changes …”

Section: Resultsmentioning

confidence: 99%

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Strong, Durable, and Aging-Resistant Bamboo Composites Fabricated by Silver In Situ Impregnation

Zhan

Zhang

et al. 2020

ACS Sustainable Chem. Eng.

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Strong, durable, and aging-resistant bamboo composites were prepared by silver electrochemical and high-voltage electrostatic field (HVEF) treatments. Surface morphology, chemistry, and wettability were investigated after the treatments. Changes of rheological and curing characteristics of resin were determined. After preparation, the aging resistance and mechanical properties of bamboo composites were tested. The results showed that under the HVEF treatment, silver interacted with hemicellulose and lignin of bamboo and nanosized silver particles distributed evenly on the surface of bamboo. On the other hand, nanosilver particles directly interacted with the molecular chain of the resin by strong physical/chemical forces. According to the chemical and rheological results, the cross-linking degree of phenolic resin was proved to be increased by the catalysis of silver. An increment of density along the bonding line as well as mechanical properties of the composites was found. These findings prove that silver electrochemical and HVEF treatments are effective to regulate the structures and properties of bamboo composites and may also be relevant to the development of new bamboo engineering composites.

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Section: Resultsmentioning

confidence: 99%

“…They changed according to the different test environments, and affected the bonding structure, resulting in irregular changes. 61…”

Section: ■ Results and Discussionmentioning

confidence: 99%

Strong, Durable, and Aging-Resistant Bamboo Composites Fabricated by Silver In Situ Impregnation

Zhan

Zhang

et al. 2020

ACS Sustainable Chem. Eng.

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“…The variation of peak width and altitude of PWH (1%) indicated that lower loading of PF filled OPA nanoparticles diminished the penetration of PF resin into porous space and certainly reduced the density of PWH. An investigation by He et al [43] and Zeng et al [44] found out that irregular resin distribution on the veneer would significantly decrease the density due to limited interphase bonding between veneer and fibre mat after the resin cured.…”

Section: Properties Of Efb Fibre Mat/opt Veneer Hybrid Plywoodmentioning

confidence: 99%

Enhancement of Oil Palm Waste Nanoparticles on the Properties and Characterization of Hybrid Plywood Biocomposites

et al. 2020

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Using oil palm trunk (OPT) layered with empty fruit bunch (EFB), so-called hybrid plywood enhanced with palm oil ash nanoparticles, with phenol-formaldehyde (PF) resin as a binder, was produced in this study. The phenol-formaldehyde (PF) resins filled with different loading of oil palm ash (OPA) nanoparticles were prepared and used as glue for layers of the oil palm trunk (OPT) veneer and empty fruit bunch fibre mat. The resulting hybrid plywood produced was characterised. The physical, mechanical, thermal, and morphological properties of the hybrid plywood panels were investigated. The results obtained showed that the presence of OPA nanoparticles significantly affected the physical, mechanical, and thermal properties of the plywood panels. Significant improvements in dimension from water absorption and thickness swelling experiments were obtained for the plywood panels with the highest OPA nanoparticles loading in PF resin. The mechanical properties indicated that plywood composites showed improvement in flexural, shear, and impact properties until a certain loading of OPA nanoparticles in PF resin. Fracture surface morphology also showed the effectiveness of OPA nanoparticles in the reduction of layer breakage due to force and stress distribution. The thermal stability performance showed that PF filled OPA nanoparticles contributed to the thermal stability of the plywood panels. Therefore, the results obtained in this study showed that OPA nanoparticles certainly improved the characteristic of the hybrid plywood.

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“…Zeng et al [42] employed eight wetdry cycles of 25°C, 63°C, and 95°C to accelerate the aging of poplar plywood bonded by soybased adhesives. After eight wet-dry cycles under all three conditions, the strength of soy adhesive decreased.…”

Section: Aging Propertiesmentioning

confidence: 99%

Research Progress on Formaldehyde‐Free Wood Adhesive Derived from Soy Flour

Gui¹,

Zhu²,

Zhang³

et al. 2016

Adhesives - Applications and Properties

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Soy-based adhesives have been regarded as the most suitable candidates for wood industry. For a widespread use of soy-based adhesives, new technologies need to be developed to improve the water resistance. An overview on the methods to improve water resistance of soy-based adhesives is presented. Denaturants were once considered necessary to modify soy protein. However, water-resistant soy adhesives could be prepared by simply removing water-soluble carbohydrates and low molecular peptides from soy flour. In addition, proper grafting and cross-linking agents help to prepare water-resistant soy-based adhesives, which are used widely to bond interior wood composites. In particular, a new type of polyamidoamine (PADA) resin and an itaconic acid-based polyamidoamine-epichlorohydrin (IA-PAE) resin were synthesized to perform as cross-linking agents for soy-based adhesives. This review concludes that soybased adhesives have great potential for use in numerous applications. However, future work is still needed to make soy-based adhesives more competitive with synthetic adhesives.

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Aging Resistance Properties of Poplar Plywood Bonded by Soy Protein-Based Adhesive

Cited by 10 publications

References 4 publications

Strong, Durable, and Aging-Resistant Bamboo Composites Fabricated by Silver In Situ Impregnation

Strong, Durable, and Aging-Resistant Bamboo Composites Fabricated by Silver In Situ Impregnation

Enhancement of Oil Palm Waste Nanoparticles on the Properties and Characterization of Hybrid Plywood Biocomposites

Research Progress on Formaldehyde‐Free Wood Adhesive Derived from Soy Flour

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