Abdalla Soliman, Al-Aama Nabil, Al-Ghamdi Maryam A
Department of Medical Physics, Faculty of Science, King Abdulaziz University Jeddah, P.O. Box 80203, Jeddah 21589, Saudi Arabia.
Internal Medicine and Cardiology, King Abdulaziz University Medical School, Present Director of CCU & Consultant Adult Interventional Cardiologist, Jeddah 21589, Saudi Arabia.
Polymers (Basel). 2016 Aug 10;8(8):292. doi: 10.3390/polym8080292.
The advantages of photo polymerization methods compared to thermal techniques are: rapid cure reactions, low energy demands, solvent free requirements and room temperature use. In order to form a macromer, polycaprolactone (PCL) was cross-linked via ultraviolet power with 2-isocyanatoethyl methacrylate. Different methods of characterization were carried out: estimation of swelling capacity, adhesive capacity (using aminated substrates), surface energy (by contact angle), and attenuated total reflectance Fourier transform infrared. In addition to these experiments, we carried out dynamical mechanical thermal analysis, thermogravimetry and thermorphology characterizations of PCL. Thus, it has been concluded that the prepared macromer could be transformed into membranes that were effective as a medical adhesive. The degree of cross linking has been estimated using two different techniques: swelling of the samples and photo cross linking of the samples with different periods of irradiation at relatively high UV-power (600 mW/cm²).
与热技术相比，光聚合方法的优点有：固化反应迅速、能量需求低、无需溶剂且可在室温下使用。为了形成大分子单体，聚己内酯（PCL）通过紫外线与甲基丙烯酸2-异氰酸乙酯交联。采用了不同的表征方法：溶胀能力评估、粘附能力（使用胺化底物）、表面能（通过接触角）以及衰减全反射傅里叶变换红外光谱。除了这些实验，我们还对PCL进行了动态力学热分析、热重分析和热形态表征。因此，得出的结论是，制备的大分子单体可以转化为有效的医用粘合剂膜。使用两种不同技术估计了交联度：样品的溶胀以及在相对高的紫外功率（600 mW/cm²）下对样品进行不同照射时间的光交联。
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