Application of tung oil to improve adhesion strength and water resistance of cottonseed meal and protein adhesives on maple veneer

He, Zhongqi; Chapital, Dorselyn C.; Cheng, H. N.; Klasson, K. Thomas; Olanya, O. M.; Uknalis, Joseph

doi:10.1016/j.indcrop.2014.07.031

Cited by 68 publications

(44 citation statements)

References 21 publications

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“…After achieving the maximum values, the adhesive shear strength for both tests remained the same, or decreased slightly during the remaining testing times. The results confirmed our previous observation (He et al, 2014b) for washed cottonseed meal that four-days of conditioning is sufficient to assess the proper functioning of the oilseed meal/tung oil adhesive for both dry and soaked conditions. …”

Section: Green Strengthsupporting

confidence: 90%

“…Even though, the adhesive performance of SMr with the press temperature at 130 o C was still the poorest among the 10 sets of data. Those data showed the effect of tung oil addition for soy products was not greater than for cottonseed meal products (He et al, 2014b). Thus, the results of this research with or without tung oil addition demonstrated that there were some differences in adhesive performance between soy meal-based and cottonseed meal-based products.…”

Section: Effect Of Tung Oil On Adhesive Strength Of Soy Meal Productsmentioning

confidence: 63%

“…Adhesive slurries were prepared by mixing a dessicated soy meal product with deionized water (3:25 w/w) for 2 h. If needed, tung oil (Real Milk Paint Co. Hohenwald, TN) was added and mixed for another 0.5 h (He et al, 2014b). Using a brush, each adhesive preparation was applied to one end of two wood veneer strips covering 25.4 mm (1.0") length.…”

Section: Preparation Of Bonded Wood Specimensmentioning

confidence: 99%

“…Working on the hypothesis that the removal of water soluble components would improve the adhesive properties of the defatted meal, especially water resistance, we (He et al, 2014a;2014b;2014c) developed a unique water washing procedure to produce water washed cottonseed meal and demonstrated that, as a wood adhesive, the insoluble cottonseed meal fraction (i. e. water washed meal) was good as cottonseed protein isolate. Further characterization of these products indicated that both water soluble proteins and carbohydrates were removed during water washing, the water insoluble fraction was less hydrophilic than the water soluble fraction (He et al, 2014d;.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

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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Section: Green Strengthsupporting

confidence: 90%

Section: Effect Of Tung Oil On Adhesive Strength Of Soy Meal Productsmentioning

confidence: 63%

Section: Preparation Of Bonded Wood Specimensmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

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

He¹,

Chapital²,

Cheng³

2016

MAS

Self Cite

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“…The adhesive slurries exampled in this protocol are simply the defatted seed meal product and water. Various adhesive formulations can be reached by addition of testing reagents (such as sodium dodecyl sulfate, sodium bisulfite or tung oil) 5,6,23 and/or changes in mixing conditions (such as pH, ratio of solid and water) 3,24,25 . Adjustment of the adhesive formulation is also needed if the rheological properties of the adhesive slurry are not suitable for appropriate application to the wood strips.…”

Section: Discussionmentioning

confidence: 99%

Preparation and Testing of Plant Seed Meal-based Wood Adhesives

Chapital

2015

JoVE

Self Cite

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Recently, the interest in plant seed meal-based products as wood adhesives has steadily increased, as these plant raw materials are considered renewable and environment-friendly. These natural products may serve as alternatives to petroleum-based adhesives to ease environmental and sustainability concerns. This work demonstrates the preparation and testing of the plant seed-based wood adhesives using cottonseed and soy meal as raw materials. In addition to untreated meals, water washed meals and protein isolates are prepared and tested. Adhesive slurries are prepared by mixing a freeze-dried meal product with deionized water (3:25 w/w) for 2 hr. Each adhesive preparation is applied to one end of 2 wood veneer strips using a brush. The tacky adhesive coated areas of the wood veneer strips are lapped and glued by hot-pressing. Adhesive strength is reported as the shear strength of the bonded wood specimen at break. Water resistance of the adhesives is measured by the change in shear strength of the bonded wood specimens at break after water soaking. This protocol allows one to assess plant seed-based agricultural products as suitable candidates for substitution of synthetic-based wood adhesives. Adjustments to the adhesive formulation with or without additives and bonding conditions could optimize their adhesive properties for various practical applications. Video LinkThe video component of this article can be found at

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Wood Adhesives Based on Natural Resources: A Critical Review: Part I. Protein‐Based Adhesives

Dunky

2021

Progress in Adhesion and Adhesives

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Application of tung oil to improve adhesion strength and water resistance of cottonseed meal and protein adhesives on maple veneer

Cited by 68 publications

References 21 publications

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

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

Preparation and Testing of Plant Seed Meal-based Wood Adhesives

Wood Adhesives Based on Natural Resources: A Critical Review: Part I. Protein‐Based Adhesives

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