Bark Hyeon Sang, Maeng Inhee, Kim Jin Un, Kim Kyoung Dong, Na Jae Hun, Min Junki, Byun Jungsup, Song Yongkeun, Cha Byung-Youl, Oh Seung Jae, Ji Young Bin
Radiation Center for Ultrafast Science, Korea Atomic Energy Research Institute (KAERI), Deajeon 34057, Korea.
YUHS-KRIBB Medical Convergence Research Institute, Yonsei University College of Medicine, Seoul 03722, Korea.
Polymers (Basel). 2022 May 13;14(10):2008. doi: 10.3390/polym14102008.
We investigated the spectral property changes in anti-adhesion films, which were cross-linked and surface-modified through electron beam irradiation, using terahertz time-domain spectroscopy (THz-TDS). Polyethylene oxide (PEO), which is a biocompatible and biodegradable polymer, was the main component of these anti-adhesion films being manufactured for testing. The terahertz characteristics of the films were affected by the porosity generated during the freeze-drying and compression processes of sample preparation, and this was confirmed using optical coherence tomography (OCT) imaging. An anti-adhesion polymer film made without porosity was measured by using the THz-TDS method, and it was confirmed that the refractive index and absorption coefficient were dependent on the crosslinking state. To our knowledge, this is the first experiment on the feasibility of monitoring cross-linking states using terahertz waves. The THz-TDS method has potential as a useful nondestructive technique for polymer inspection and analysis.
我们使用太赫兹时域光谱（THz - TDS）研究了通过电子束辐照进行交联和表面改性的抗粘连膜的光谱特性变化。聚环氧乙烷（PEO）是一种生物相容性和可生物降解的聚合物，是这些用于测试的抗粘连膜的主要成分。膜的太赫兹特性受样品制备的冷冻干燥和压缩过程中产生的孔隙率影响，这通过光学相干断层扫描（OCT）成像得到证实。使用THz - TDS方法测量了无孔隙的抗粘连聚合物膜，证实折射率和吸收系数取决于交联状态。据我们所知，这是首次关于使用太赫兹波监测交联状态可行性的实验。THz - TDS方法作为一种用于聚合物检测和分析的有用无损技术具有潜力。
