Key Laboratory of High Efficiency and Clean Mechanical Manufacture (Ministry of Education), School of Mechanical Engineering, Shandong University, Jinan 250061, China; National Demonstration Center for Experimental Mechanical Engineering Education, Shandong University, Jinan 250061, China.
Key Laboratory of High Efficiency and Clean Mechanical Manufacture (Ministry of Education), School of Mechanical Engineering, Shandong University, Jinan 250061, China; National Demonstration Center for Experimental Mechanical Engineering Education, Shandong University, Jinan 250061, China.
Int J Biol Macromol. 2024 Oct;277(Pt 3):134234. doi: 10.1016/j.ijbiomac.2024.134234. Epub 2024 Jul 27.
Biomass-based adhesives are gaining attention as environmentally friendly alternatives to toxic petroleum-based adhesives. However, biomass-based adhesives exhibit poor adhesive properties and are highly susceptible to failure in humid environments. In this study, a zein-based adhesive with high adhesive strength and good water resistance was prepared by optimizing the solvent composition and adding tannic acid. Adding 10 wt% acetic acid to an aqueous ethanol solvent increased the shear strength by 45.4 % to 3.09 MPa. Moreover, the addition of 6 wt% tannic acid improved the shear strength of the zein-based adhesive in humid environments from 0.63 to 1.58 MPa. The tannic acid-reinforced zein-based adhesive exhibited good adhesive strength in both humid and dry environments, which was maintained for 30 days on glass, and could be applied to a wide range of substrates. Moreover, the adhesive showed an antioxidant activity >94 %, excellent thermal stability, biocompatibility, and antibacterial effect. Therefore, this adhesive has great application prospects in medical, packaging, and other fields.
基于生物质的胶粘剂作为一种环保型替代品，逐渐受到人们的关注，用以替代有毒的石油基胶粘剂。然而，基于生物质的胶粘剂的粘合性能较差，在潮湿环境中极易失效。在这项研究中，通过优化溶剂组成并添加单宁酸，制备出了一种具有高粘合强度和良好耐水性的基于玉米朊的胶粘剂。在水性乙醇溶剂中添加 10wt%的乙酸，可将剪切强度提高 45.4%，达到 3.09MPa。此外，添加 6wt%的单宁酸可将基于玉米朊的胶粘剂在潮湿环境中的剪切强度从 0.63MPa 提高到 1.58MPa。单宁酸增强的基于玉米朊的胶粘剂在潮湿和干燥环境中均表现出良好的粘合强度，在玻璃上可保持 30 天，可应用于多种基材。此外，该胶粘剂还具有抗氧化活性>94%、优异的热稳定性、生物相容性和抗菌效果。因此，这种胶粘剂在医疗、包装等领域具有广阔的应用前景。
