Abstract
In this paper, halloysite nanotubes (HNTs) are used to enhance the bonding properties and water resistance of soy protein adhesives. HNTs are modified by KH560 marked as KH560-HNTs and dispersed in the adhesive matrix by ultrasonic-mechanical combination meanly, exploring the optimal addition amount of KH560-HNTs in the adhesive matrix and preparing a nanocomposite adhesive with uniform texture and exceptional properties. The results show that KH560-HNTs can significantly improve the bonding strength and thermal stability of SPI. The optimal addition of KH560-HNTs is 2%, meanwhile, the dry and wet bonding strengths are 1.63 MPa and 1.44 MPa, which increased by 34.71% and 102.82%, respectively, compared with that of soybean protein adhesive (SPI-0). Therefore, KH560-HNTs can be used to prepare environmentally friendly and excellent performance soy protein adhesives. In addition, the results can provide a research basis for the preparation of functional soy protein adhesives by loading additives in HNTs.
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