Journal
BIORESOURCE TECHNOLOGY
Volume 101, Issue 15, Pages 6235-6241Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2010.02.107
Keywords
Wood glue; Calcium carbonate; Gecko adhesion; Soy protein
Funding
- Natural Science Foundation of Guangdong Province [4400-E09012]
- SCAU
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Despite the biodegradability, non-toxicity, and renewability, commercially available soy protein-based adhesives still have not been widely adopted by industry, partially due to their disappointing performances, i.e., low glue strength in the dry state and no glue strength in the wet state. In this study, bio-mimetic soy protein/CaCO(3) hybrid wood glue was devised and an attempt made to improve the adhesion strength. The structure and morphology of the adhesive and its fracture bonding interface and adhesion strength were investigated. Results showed that the compact rivets or interlocking links, and ion crosslinking of calcium, carbonate, hydroxyl ions in the adhesive greatly improving the water-resistance and bonding strength of soy protein adhesives. Glue strength of soy protein hybrid adhesive was higher than 6 MPa even after three water-immersion cycles. This green and sustainable proteinous hybrid adhesive, with high glue strength and good water-resistance, is a good substitute for formaldehyde wood glues. (C) 2010 Elsevier Ltd. All rights reserved.
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