Abstract In this study, polystyrene modified Scots pine (Pinus sylvestris L.) wood was investigated upon artificial weathering, decay resistance, dimensional stability and water uptake properties. Polystyrene modification was carried out on pretreated wood by immersion of wood into styrene monomer and further polymerization. The resistance of modified wood against cycles of UV and water exposures was examined by artificial weathering test for 672 hours, and decay resistance was evaluated by attacks of Coniophora puteana and Trametes versicolor on the samples. During the artificial weathering, color and surface roughness of the samples, and macroscopic changes were determined periodically. Changes in the surface chemistry and morphology of the weathered samples were investigated by ATR-FTIR and SEM, respectively. It was proven that polystyrene effectively protected pine samples from both fungi even after leaching procedure, but it was more effective in preventing C. puteana attacks than T. versicolor attacks. As a result of artificial weathering, the surface of all samples was darkened. However, changes in color and roughness as well as crack formations of the modified sample surfaces were found less than those of the untreated samples. Polystyrene also provided considerable improvement on dimensional stability, as well as water repellence of wood.

中文翻译：

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苯乙烯原位聚合改性松木尺寸稳定性、耐候性和耐腐性评价

摘要 在这项研究中，研究了聚苯乙烯改性苏格兰松 (Pinus sylvestris L.) 木材的人工风化、抗腐性、尺寸稳定性和吸水性能。通过将木材浸入苯乙烯单体中并进一步聚合，对预处理过的木材进行聚苯乙烯改性。改性木材对紫外线和水暴露循环的抵抗力通过人工风化试验 672 小时进行了检查，并通过对样品进行了 Coniophora puteana 和 Trametes versicolor 的攻击来评估耐腐性。在人工风化过程中，定期测定样品的颜色和表面粗糙度以及宏观变化。分别通过 ATR-FTIR 和 SEM 研究了风化样品的表面化学和形貌的变化。事实证明，即使经过浸出程序，聚苯乙烯也能有效保护松树样品免受两种真菌的侵害，但它在防止 C. puteana 攻击方面比 T. versicolor 攻击更有效。由于人工风化，所有样品的表面都变黑了。然而，发现改性样品表面的颜色和粗糙度变化以及裂纹形成小于未处理样品。聚苯乙烯还显着改善了木材的尺寸稳定性和防水性。发现改性样品表面的颜色和粗糙度变化以及裂纹形成小于未处理样品。聚苯乙烯还显着改善了木材的尺寸稳定性和防水性。发现改性样品表面的颜色和粗糙度变化以及裂纹形成小于未处理样品。聚苯乙烯还显着改善了木材的尺寸稳定性和防水性。