Journal
JOURNAL OF ADHESION SCIENCE AND TECHNOLOGY
Volume 27, Issue 18-19, Pages 2083-2093Publisher
TAYLOR & FRANCIS LTD
DOI: 10.1080/01694243.2012.697658
Keywords
bioadhesives; soy protein; gelatin; shear bond strength; tensile bond strength
Funding
- Direct For Education and Human Resources
- Division Of Human Resource Development [1137681] Funding Source: National Science Foundation
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A small-scale test method to measure the tensile strength of adhesive-bonded wood strip specimens was developed by simple modification of commercially available binder clips. As bioadhesives, soy protein concentrate (SPC) and gelatin resins were prepared and were evaluated for shear and tensile bond strengths of bamboo and maple wood-bonded specimens. Titebond-II (TB-II), a commercially available wood glue was also tested to compare its bonding property to SPC and gelatin-based bioadhesives. TB-II glue showed the highest shear and tensile bond strengths with both bamboo and maple wood strips. Hot-pressing increased the shear and tensile bond strengths of SPC resin with wood specimens by 500% while the increase for gelatin resins was up to 200%. Roughness profile and surface properties were also characterized with an optical interferometric profiler and a scanning electron microscope. The results indicated that rougher surface significantly increased the bond strengths in both shear and tensile modes.
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