Novel wood adhesives from condensed tannins and polyethylenimine

Li, K.; Geng, Xinglian; Simonsen, John Lionel; Karchesy, Joseph J.

doi:10.1016/j.ijadhadh.2003.11.004

Cited by 128 publications

(73 citation statements)

References 12 publications

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“…The total solids content is an important factor in the performance and application of wood adhesive (Li et al 2004). Figure 4 shows the bond strength of plywood glued with various total solids contents.…”

Section: Effects Of the Total Solids Content On The Kcp Blend Adhesivementioning

confidence: 99%

Dry Bond Strength and Water Resistance of Konjac Glucomannan, Chitosan, and Polyvinyl Alcohol Blend Adhesive

Chen¹,

Xia²,

Guo³

et al. 2015

BioResources

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An environmentally-friendly wood adhesive was developed by blending konjac glucomannan (KGM), chitosan (CH), and polyvinyl alcohol (PVA) together. The viscosity of the KGM-CH-PVA (KCP) blend adhesive was determined, and the morphology of the film was observed using scanning electron microscopy (SEM). The KCP blend adhesive was applied to plywood during the manufacturing process, and the effects of the KGM, CH, and PVA contents on the bond strength was investigated. Results showed that KGM greatly increased the viscosity of the KCP blend adhesive, whereas the addition of PVA decreased the viscosity in the test range. The SEM observations showed that the KCP blend adhesive was homogeneous. The bond strength of the plywood that was treated with KCP blend adhesive increased with increasing KGM and CH concentrations, and desirable performance could be obtained with a total solids content of 4.6%. The KCP blend adhesive with 2.0% KGM, 2.0% CH, and 0.6% PVA exhibited a comparable bond strength with phenol formaldehyde. Findings suggest that the KCP blend adhesive can be used as a wood adhesive with all raw materials, having the advantage of being environmentally friendly.

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Section: Effects Of the Total Solids Content On The Kcp Blend Adhesivementioning

confidence: 99%

Dry Bond Strength and Water Resistance of Konjac Glucomannan, Chitosan, and Polyvinyl Alcohol Blend Adhesive

Chen¹,

Xia²,

Guo³

et al. 2015

BioResources

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show abstract

“…Newer developments concentrate on developing resins totally free of formaldehyde by combining tannins with other bio-based material, e.g. protein (Li, K. et al 2004). Hexamine (see Fig.…”

Section: Tanninsmentioning

confidence: 99%

Wood production, wood technology, and biotechnological impacts

Kües¹

2007

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“…As synthetic wood adhesives are mostly derived from depleting petrochemical resources and have caused increasing environmental concern, agricultural product and byproduct derived adhesives have attracted much attention in recent decades (Akaranta et al, 1996;Khan et al, 2004;Li et al, 2004;Wang et al, 2014). Among them, soy protein isolate (SPI) is the most studied for this purpose (Frihart et al, 2013;Liu & Li, 2007;Qi et al, 2012).…”

Section: Introductionmentioning

confidence: 99%

Comparison of the Adhesive Performances of Soy Meal, Water Washed Meal Fractions, and Protein Isolates

He¹,

Chapital²,

Cheng³

2016

MAS

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Adhesive bonding of wood plays an increasing role in the forest products industry and is a key factor for efficiently utilizing timber and other lignocellulosic resources. In this work, we obtained five soy meal products through commercial sources or in-house preparations. The protein content was 49.6%, 56.9%, 66.2%, 86.3%, and 91.9% for untreated defatted soy meal, pH 8.5 water washed meal, neutral water washed meal, commercial protein isolate, and in-house prepared protein isolate. The adhesive performances measured by the maximal dry and soaked shear strength of the bonded maple veneers at break were not exactly in the same order of the protein content, indicating that other components (e.g. carbohydrates, metals) might also have played certain roles in the adhesive ability of these products. Data at two press temperatures (i. e. 100, and 130 o C) with or without the addition of tung oil revealed that water washed soy meals behaved more like untreated meal than soy protein isolates. This observation is different from a recent report on the effect of water washing on cottonseed meal products. Thus, further elucidation of the mechanisms or causes of the differing effects of water washing would shed light on the adhesive mechanisms of the two types of oilseed meal materials, thus optimizing use of these materials and their fractions for wood bonding.

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Novel wood adhesives from condensed tannins and polyethylenimine

Cited by 128 publications

References 12 publications

Dry Bond Strength and Water Resistance of Konjac Glucomannan, Chitosan, and Polyvinyl Alcohol Blend Adhesive

Dry Bond Strength and Water Resistance of Konjac Glucomannan, Chitosan, and Polyvinyl Alcohol Blend Adhesive

Wood production, wood technology, and biotechnological impacts

Comparison of the Adhesive Performances of Soy Meal, Water Washed Meal Fractions, and Protein Isolates

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