美国普渡大学Wilker, Jonathan J.团队报道了可持续来源的组分可生产高强度粘合剂。相关研究成果于2023年9月13日发表于国际顶尖学术期刊《自然》。

几乎所有的粘合剂都来源于石油，产生永久性的粘合，阻碍材料分离以进行回收，并防止垃圾填埋场中的降解。当试图从石油原料转向可持续材料生态系统时，可用的选择会出现性能低、成本高或缺乏所需规模的可用性的问题。

该文中，研究人员介绍了一种可持续来源的粘合剂系统，由环氧化大豆油、苹果酸和单宁酸制成，其性能与当前的工业产品相媲美。粘结处可以在从使用吹风机5分钟到180 °C度下放入烤箱 24 h的条件下进行固化。金属基底之间的附着力高达约18 MPa，在最好的情况下，其性能超过了现代最强粘合剂——经典环氧树脂的性能。所有成分都是生物质衍生的，成本低，并且已经大量可用。大规模生产可以简单地混合和加热，这表明这种新型粘合剂可能有助于材料的可持续粘合。

附：英文原文

Title: Sustainably sourced components to generate high-strength adhesives

Author: Westerman, Clayton R., McGill, Bradley C., Wilker, Jonathan J.

Issue&Volume: 2023-09-13

Abstract: Nearly all adhesives1,2 are derived from petroleum, create permanent bonds3, frustrate materials separation for recycling4,5 and prevent degradation in landfills. When trying to shift from petroleum feedstocks to a sustainable materials ecosystem, available options suffer from low performance, high cost or lack of availability at the required scales. Here we present a sustainably sourced adhesive system, made from epoxidized soy oil, malic acid and tannic acid, with performance comparable to that of current industrial products. Joints can be cured under conditions ranging from use of a hair dryer for 5 min to an oven at 180 °C for 24 h. Adhesion between metal substrates up to around 18 MPa is achieved, and, in the best cases, performance exceeds that of a classic epoxy, the strongest modern adhesive. All components are biomass derived, low cost and already available in large quantities. Manufacturing at scale can be a simple matter of mixing and heating, suggesting that this new adhesive may contribute towards the sustainable bonding of materials. We present a sustainably sourced adhesive system, with performance comparable to that of current industrial products, made from epoxidized soy oil, malic acid and tannic acid, all biomass derived, low cost and readily available.

DOI: 10.1038/s41586-023-06335-7

Source: https://www.nature.com/articles/s41586-023-06335-7