Faculty of Technical Physics, Poznan University of Technology, Nieszawska 13A, 60-965 Poznan, Poland.
Spectrochim Acta A Mol Biomol Spectrosc. 2011 Aug 15;79(4):815-8. doi: 10.1016/j.saa.2010.08.058. Epub 2010 Sep 21.
The results of Brillouin scattering investigations of two-component system: 2,2-bis[4-(2-hydroxy-3-methacryloxypropoxy)phenyl]propane/polyethylene glycol methacrylate (bis-GMA/PEGMM) containing 0, 30, 50, 70, 85 and 100 mol% of PEGMM are presented. For the first time the Brillouin spectroscopy was used to monitor the progress of the polymerization process. The polymerization was initiated by ultraviolet radiation (λ=365 nm), at temperature 20°C and 40°C. Some of the physical parameters characteristic for this system such as velocity V, adiabatic compressibility β(ad) and attenuation coefficient α of the acoustic waves have been estimated from Brillouin spectra as a functions of the polymerization time. The obtained results have been discussed in terms of changes of the elastic properties of the two-component system occurring during polymerization process and their dependence on bis-GMA/PEGMM system composition.
2,2-双[4-(2-羟基-3-丙烯酰氧基丙氧基)苯基]丙烷/聚乙二醇甲基丙烯酸酯（Bis-GMA/PEGMM）中含有 0、30、50、70、85 和 100 mol%的 PEGMM 的布里渊散射研究结果。首次使用布里渊光谱法监测聚合过程的进展。聚合由紫外辐射（λ=365nm）引发，温度为 20°C 和 40°C。从布里渊光谱中估计了该体系的一些物理参数，如声速 V、绝热压缩率β(ad)和衰减系数α，作为聚合时间的函数。根据聚合过程中双组分体系弹性性质的变化及其对 Bis-GMA/PEGMM 体系组成的依赖性，对所得结果进行了讨论。
