When exposed to moisture, wood undergoes swelling and is susceptible to fungal degradation. Chemical modification via oligomeric lactic acid (OLA) treatment has been found to be a promising environmentally friendly solution to this disadvantage. In this study, wood was impregnated with OLA and then variously heat treated to polymerize the OLA in situ. The effect of curing temperature and time on OLA polymerization has been determined chemically. Dimensional stability was examined by water immersion and hygroscopicity measurements and biological decay resistance also evaluated. OLA impregnation followed by heat treatment enhanced wood properties. OLA cure at 160 °C for 48 h resulted in treated wood with greater dimensional stability and biological resistance.

中文翻译：

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通过筛选加工条件优化低聚乳酸的化学木材改性

当暴露在潮湿环境中时，木材会膨胀并容易受到真菌降解。已发现通过低聚乳酸 (OLA) 处理进行化学改性是解决这一缺点的一种有前途的环保解决方案。在这项研究中，木材用 OLA 浸渍，然后进行各种热处理以原位聚合 OLA。固化温度和时间对 OLA 聚合的影响已通过化学方法确定。尺寸稳定性通过水浸和吸湿性测量进行检查，还评估了生物抗腐性。OLA 浸渍后热处理增强了木材性能。OLA 在 160 °C 下固化 48 小时，使处理过的木材具有更高的尺寸稳定性和生物抗性。