Institute of Biomass and Function Materials, College of Bioresources Chemistry and Materials Engineering, Shaanxi University of Science and Technology, Xi'an 710021, PR China.
Institute of Biomass and Function Materials, College of Bioresources Chemistry and Materials Engineering, Shaanxi University of Science and Technology, Xi'an 710021, PR China.
Int J Biol Macromol. 2024 Nov;281(Pt 3):136507. doi: 10.1016/j.ijbiomac.2024.136507. Epub 2024 Oct 11.
The development of natural adhesives to substitute petroleum-based products is crucial for sustainable progress. However, the bond strength of most existing natural adhesives still falls short of that of commercially available adhesives and the curing process often demands prolonged high-temperature treatment. Herein, we prepared pure natural adhesives using gelatin (GE), tung oil (TO), and dopamine (DA) as the main raw materials. The shear strength of the adhesive to wood reached up to 6.35 MPa, a significant improvement over most natural wood adhesives reported. Additionally, the tensile strength of the adhesive to wood reached 10.50 MPa, which is comparable to commercially available neoprene-phenolic wood adhesives (9.99 MPa) and cyanoacrylate instant adhesives (9.48 MPa). In addition, the natural adhesive prepared by us exhibits fast curing performance at room temperature and can be fully cured in only 12 min, which is significantly better than the commercially available adhesive. The adhesives prepared in this study also possessed excellent reversible curing properties, antimicrobial properties, low toxicity, and degradability. These characteristics offer new insights for the advancement and dissemination of natural adhesives.
开发可替代石油基产品的天然胶粘剂对于可持续发展至关重要。然而，大多数现有天然胶粘剂的粘结强度仍然低于市售胶粘剂，并且其固化过程通常需要长时间的高温处理。在此，我们使用明胶（GE）、桐油（TO）和多巴胺（DA）作为主要原料制备了纯天然胶粘剂。该胶粘剂对木材的剪切强度达到了 6.35 MPa，明显优于大多数已报道的天然木材胶粘剂。此外，该胶粘剂对木材的拉伸强度达到 10.50 MPa，与市售的氯丁酚醛木胶（9.99 MPa）和氰基丙烯酸酯瞬干胶（9.48 MPa）相当。此外，我们制备的天然胶粘剂在室温下具有快速固化性能，仅需 12 分钟即可完全固化，明显优于市售胶粘剂。本研究中制备的胶粘剂还具有优异的可重复固化性能、抗菌性能、低毒性和可降解性。这些特性为天然胶粘剂的发展和推广提供了新的思路。
