Phenolic Resin Modified Soybean Protein Adhesive

Ji, Nan; Long, Jun; Zheng, Huan Yu; He, Jin Qiu

doi:10.4028/www.scientific.net/amr.236-238.3

Cited by 4 publications

(1 citation statement)

References 8 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Of the many plant materials, most of the research has been with soy because of its ready availability as a low‐cost flour with acceptably consistent composition. Most recent research has focused on addition of co‐reacting adhesives, such as phenolics, polyamidoamine‐epichlorohydrin, isocyanates, and epoxies, but other research has used aldehydes, or added reactive functionality to the protein . Often, this research has used commercial soy protein isolate, which is readily available but can be a poor model compound for the native proteins in soy flour because of the processing involved in commercial isolate production, especially jet‐cooking for increased performance in food applications .…”

Section: Introductionmentioning

confidence: 99%

Specific oxidants improve the wood bonding strength of soy and other plant flours

Frihart

Lorenz

2019

J. Polym. Sci. Part A: Polym. Chem.

View full text Add to dashboard Cite

To meet newer environmental standards, modified plant proteins have been studied as no-added formaldehyde wood adhesives for interior applications. Many methods have been developed to increase the wet strength of wood products bonded with soy adhesives. These methods involve modifying the soy in separate steps prior to formulating the adhesive or adding a polymerizable co-reactant to the soy. We show that adding periodate, permanganate, or iodate to soy flour improved the strength of soy adhesive bonds in small-scale testing and in plywood shear, especially when tested under wet conditions. Periodate improved the bond strength of other plant materials (lupine, canola, and cottonseed) but none of these produced as high of a wet strength as the soy flour. We investigated other oxidants with plant proteins. Permanganate was quite effective and iodate was somewhat effective, whereas nitric acid, chlorate, perchlorate, and bromate were not effective in increasing wet strength. The available data are consistent with oxidation of the carbohydrate-protein mixture in plant flours to provide adhesives with increased wet strength in wood bonds. This mechanism was also supported by the improved wet strength with the addition of dialdehydes (glyoxal and glutaraldehyde). The purified soy protein also gave strength improvement with periodate.

show abstract

Section: Introductionmentioning

confidence: 99%

Specific oxidants improve the wood bonding strength of soy and other plant flours

Frihart

Lorenz

2019

J. Polym. Sci. Part A: Polym. Chem.

View full text Add to dashboard Cite

show abstract

Bonding Quality of Chemically‐Modified Soybean Protein Concentrate‐Based Adhesives in Particleboards from Rice Husks

Ciannamea

Martucci

Stefani

et al. 2012

J Americ Oil Chem Soc

View full text Add to dashboard Cite

The aim of the present study was to upgrade the bonding quality and water resistance of medium-density particleboards based on rice husks (RH) as a wood substitute and soybean protein concentrate (SPC) as the binder via chemical modification of SPC. Alkali (A), citric acid (CA) and boric acid (BA) were used to modify proteins and the carbohydrate complex in SPC. The effect of chemical treatment performed on SPC was followed by Fourier transform infrared, differential scanning calorimetry, thermo-gravimetric analysis and initial apparent viscosity measurements. Board properties were evaluated in terms of internal bond (IB) and physical properties. Results revealed that boards bonded with SPC treated with boric acid, exhibited the highest IB and the lowest water absorption and thickness swelling at 2 and 24 h, due to cross-linking reactions with exposed OH-groups in the amorphous region of cellulose of RH. Results demonstrate that boric acidmodified-SPC-bonded boards met the requirements of IB recommended by the US Standard ANSI A208.1-2009 for M1, MS, M2 and M3-grade medium-density particleboards but failed to pass the thickness swelling required. This issue of BSPC-RH boards is compensated for by the benefit of being formaldehyde-free which makes them suitable for indoor applications.

show abstract

Development and characterization of a defatted soy flour-based bio-adhesive crosslinked by 1,2,3,4-butanetetracarboxylic acid

Zheng

Qin

et al. 2017

International Journal of Adhesion and Adhesives

View full text Add to dashboard Cite

Phenolic Resin Modified Soybean Protein Adhesive

Cited by 4 publications

References 8 publications

Specific oxidants improve the wood bonding strength of soy and other plant flours

Specific oxidants improve the wood bonding strength of soy and other plant flours

Bonding Quality of Chemically‐Modified Soybean Protein Concentrate‐Based Adhesives in Particleboards from Rice Husks

Development and characterization of a defatted soy flour-based bio-adhesive crosslinked by 1,2,3,4-butanetetracarboxylic acid

Contact Info

Product

Resources

About