Abstract We have applied vacuum ultraviolet (VUV) irradiation to room temperature bonding (RTB) of cyclo-olefin polymer (COP). The COP surface was oxidized into oxygen functional groups through the VUV irradiation in air. The extent of oxygenation was evaluated by water contact angle (WCA), X-ray photoelectron spectroscopy (XPS) and attenuated total reflectance Fourier transform infrared spectroscopy (ATR-FTIR). The obtained results showed that the concentration of oxygen functional groups increased with VUV-irradiation time. The VUV-irradiation conditions for RTB were optimized based on our finding that prolonged irradiation resulted in a decrease in bonding strength. Observation of the fractured surfaces indicated that cohesive failure occurred after the appropriate irradiation time, but deterioration of the surface layer occurred with longer irradiation times.

中文翻译：

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真空紫外表面光活化环烯烃聚合物的室温键合

摘要 我们已将真空紫外 (VUV) 辐照应用于环烯烃聚合物 (COP) 的室温键合 (RTB)。通过空气中的 VUV 照射，COP 表面被氧化成氧官能团。通过水接触角 (WCA)、X 射线光电子能谱 (XPS) 和衰减全反射傅里叶变换红外光谱 (ATR-FTIR) 评估氧化程度。所得结果表明，氧官能团的浓度随着真空紫外线照射时间的增加而增加。RTB 的 VUV 辐照条件基于我们的发现进行了优化，即延长辐照时间会导致粘合强度降低。对断裂面的观察表明，在适当的照射时间后发生了内聚破坏，