The current study investigates the properties of cactus waste seeds (CWS) unexplored by-product as partial replacement of phenol formaldehyde (PF) adhesives in comparison to previously used olive stones (OS) for the production of wood composites. The chemical composition, structure, and thermal properties of CWS were studied for the first time to evaluate their suitability for incorporation into PF resins. The bonding strength, wood failure, and rheological properties of the formulated adhesives were investigated as well as the mechanical properties of the plywoods panels. The results showed that CWS could be considered as a new lignocellulosic resource, showing a higher amount of cellulose content (27%) compared to OS (15%). The crystallinity and thermal stability were higher in CWS, which was expected to improve the performance of the formulated adhesives positively. Moreover, the resins containing 10% and 15% of CWS and OS, respectively, showed comparable bonding strength and wood failure to that of a control PF resin. While plywood bonded with 10% of CWS:PF resin showed better mechanical performance in dry, cold, and 8h boiling water conditions than other adhesives, formaldehyde emission levels of bonded panels with both formulations were lower than those of a control PF.

目前的研究调查了仙人掌废种子 (CWS) 未开发的副产品作为苯酚甲醛 (PF) 粘合剂的部分替代品的特性，与以前用于生产木材复合材料的橄榄石 (OS) 相比。首次研究了水煤浆的化学成分、结构和热性能，以评估它们与 PF 树脂的适用性。研究了配制粘合剂的粘合强度、木材破坏和流变性能以及胶合板的机械性能。结果表明，CWS 可以被视为一种新的木质纤维素资源，与 OS (15%) 相比，显示出更高的纤维素含量 (27%)。CWS的结晶度和热稳定性较高，预计这将积极改善配制粘合剂的性能。此外，分别含有 10% 和 15% CWS 和 OS 的树脂显示出与对照 PF 树脂相当的粘合强度和木材破坏。虽然用 10% 的 CWS:PF 树脂粘合的胶合板在干、冷和 8 小时沸水条件下比其他粘合剂表现出更好的机械性能，但两种配方的粘合板的甲醛释放水平低于对照 PF。