In this work, hydrolysis lignin, as a low-value feedstock, was liquefied in ethanol/water co-solvents (50:50, v/v) at 350 °C for 30 min, with or without the use of hematite ore as the catalyst. Following this, the resulting bio-crude oil was applied as the feedstock for the preparation of neat phenol formaldehyde (PF) resole and bio-phenol formaldehyde (BPF) resoles. The net PF resole was prepared by using the whole bio-crude oil, while, the phenolic extracts from the crude oil together with 50% of phenol were employed for the preparation of BPF resoles. The results displayed that although the BPF resole contained a higher free formaldehyde and less thermally stable than neat PF resole, a lower curing temperature was adopted for BPF resole compared to neat PF resole. By analyzing their physical properties, it was observed that the dry bonding strength of BPF resoles was higher than that of neat PF resole. Most importantly, the dry and wet strengths of BPF resole met the requirements for using as an adhesive for plywood bonding. Overall, it can be concluded that the bio-crude oil-derived phenolic extracts from HTL of hydrolysis lignin is a suitable feedstock for producing value-added BPF with potential use as a wood adhesive.

在这项工作中，水解木质素作为低价值原料在乙醇/水共溶剂中被液化（50:50，v/ v）在350℃下持续30分钟，使用或不使用赤铁矿作为催化剂。此后，将所得的生物粗制油用作制备纯酚醛（PF）甲阶酚醛树脂和生物酚醛（BPF）甲阶酚醛树脂的原料。净PF甲阶酚醛树脂是通过使用整个生物原油制备的，而原油中的酚类提取物与50％的苯酚一起用于制备BPF甲阶酚醛树脂。结果表明，尽管BPF甲阶酚醛树脂比纯PF甲阶酚醛树脂含有更高的游离甲醛和较低的热稳定性，但与纯PF甲阶酚醛树脂相比，BPF甲阶酚醛树脂的固化温度较低。通过分析它们的物理性能，可以观察到BPF甲阶酚醛树脂的干粘结强度高于纯PF甲阶酚醛树脂的粘结强度。最重要的是，BPF甲阶酚醛树脂的干强度和湿强度满足用作胶合板粘合的粘合剂的要求。总的来说，可以得出结论，来自水解木质素的HTL的生物原油来源的酚类提取物是生产具有附加价值的BPF的合适原料，并有可能用作木材粘合剂。