Abstract Increasing concerns over environmental health and safety, as well as diminishing fossil fuel reserves, motivate investigation into bio-based alternatives to petrochemically-derived adhesives. Adhesives derived from plant oils show promise as sustainable alternatives due to their abundance and low cost. Such adhesives are especially important in the growing domain of engineered lumber in which the material properties of low-value timber are enhanced using glued layers and joints. Linseed oil, which is derived from flax seeds, is a relatively unexplored feedstock for the preparation of eco-friendly wood adhesives. Herein, we report the preparation of a linseed oil-based adhesive and assess its strength on Liriodendron tulipifera (yellow poplar), Fraxinus americana (white ash) and Pseudotsuga menziesii (Douglas-fir). The results of a systematic study evaluating the influence of crosslinker choice, open-time, press time and adhesive spread rate on the shear strength of the adhesive-wood assembly are reported, as are results from water-soaking-and-drying tests that indicate excellent resistance of the linseed oil adhesive to water. Ultimately, these results show promise for use of the adhesive in timber applications.

中文翻译：

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一种以亚麻籽油为原料的生物基聚合物木材胶粘剂的制备与表征

摘要 对环境健康和安全的日益关注以及化石燃料储量的减少，促使人们对石化衍生粘合剂的生物基替代品进行研究。源自植物油的粘合剂因其丰富且成本低而有望成为可持续的替代品。这种粘合剂在工程木材的增长领域尤为重要，其中使用胶合层和接头增强了低价值木材的材料特性。亚麻籽油来源于亚麻籽，是一种相对未开发的原料，用于制备环保木材粘合剂。在此，我们报告了亚麻籽油基粘合剂的制备，并评估了其对鹅掌楸（黄杨）、美洲白蜡（白灰）和 Pseudotsuga menziesii（花旗松）的强度。报告了评估交联剂选择、开放时间、加压时间和粘合剂铺展速度对粘合剂-木材组件剪切强度影响的系统研究结果，以及浸水和干燥试验的结果表明亚麻籽油粘合剂优异的耐水性。最终，这些结果显示了该粘合剂在木材应用中的应用前景。