Environmental concerns over organic chemicals used for protecting wood and wood products from biological degradation have prompted the development of natural wood preservatives with lower health risks and prolonged efficacy. In this study, mixing chitosan and cinnamaldehyde to prepare an emulsion as natural wood preservative can effectively infuse cinnamaldehyde in the treated wood, enhancing the ability of the wood to resist decay fungi. Wood decay fungi were cultivated in emulsion with various molar ratios of cinnamaldehyde to chitosan emulsion. The antifungal property of the emulsion was compared according to its growing colony diameter and the mycelial morphology. The preservative emulsion was also impregnated into poplar (Populusnigra L.) with vacuum-pressure cycle. The decay resistance was evaluated by wood decay resistance test and electron microscope observation. The results showed that the cinnamaldehyde chitosan emulsion severely impacted the normal growth of the decay fungi and changed the mycelium morphology of the decay fungi. The Schiff base was formed in treated wood, and the decay resistance of treated wood was improved. Its decay resistance against brown-rot fungi Gloeophyllum trabeum was better than that of white-rot fungi Trametes versicolor. This study suggests the cinnamaldehyde chitosan emulsion can be effectively used as environmentally friendly wood preservative.

对用于保护木材和木制品免受生物降解的有机化学物质的环境问题促使人们开发出具有较低健康风险和延长功效的天然木材防腐剂。在这项研究中，将壳聚糖和肉桂醛混合以制备乳液作为天然木材防腐剂可以有效地将肉桂醛注入处理过的木材中，从而增强木材抵抗腐烂真菌的能力。在具有不同摩尔比的肉桂醛与壳聚糖乳液的乳液中培养木材腐烂真菌。根据其菌落直径和菌丝体形态，比较了该乳剂的抗真菌性能。防腐剂乳液也浸渍到杨树（PopulusnigraL.）具有真空压力循环。通过耐木材腐蚀性试验和电子显微镜观察来评价耐腐蚀性。结果表明，肉桂醛壳聚糖乳剂严重影响了腐烂真菌的正常生长，改变了腐烂真菌的菌丝形态。在处理过的木材中形成席夫碱，并且改善了处理过的木材的耐腐性。它对褐腐病菌Globeophyllum trabeum的抗腐性优于白腐病菌Trametes versicolor。该研究表明肉桂醛壳聚糖乳液可以有效地用作环保的木材防腐剂。