Filipecki J, Sitarz M, Kocela A, Kotynia K, Jelen P, Filipecka K, Gaweda M
Institute of Physics, Jan Dlugosz University, Al. Armii Krajowej 13/15, 42-200 Czestochowa, Poland.
AGH University of Science and Technology, Faculty of Materials Science and Ceramics, Al. Mickiewicza 30, 30-059 Cracow, Poland.
Spectrochim Acta A Mol Biomol Spectrosc. 2014 Oct 15;131:686-90. doi: 10.1016/j.saa.2014.04.144. Epub 2014 May 15.
Determination of free volume holes of the hydrogel and silicone-hydrogel polymer contact lenses were investigated. Two types of polymer contact lenses were used as materials: the first is a hydrogel contact lenses Proclear family (Omafilcon A), while the second is a silicone-hydrogel contact lens of the family Biofinity (Comfilcon A). Positron annihilation lifetime spectroscopy PALS was used to characterize geometrical sizes and fraction of the free volume holes in the investigated samples. There is a clear difference in the free volume sizes and their fractions between silicone-hydrogel and polymer hydrogel contact lenses which in turn are connected with oxygen permeability in these lenses. Apart from that, spectroscopic (middle infrared) MIR and Raman examinations were carried out in order to demonstrate the differences of the water content in the test contact lenses.
对水凝胶和硅水凝胶聚合物隐形眼镜的自由体积孔进行了测定研究。使用了两种类型的聚合物隐形眼镜作为材料：第一种是水凝胶隐形眼镜Proclear系列（Omafilcon A），而第二种是Biofinity系列的硅水凝胶隐形眼镜（Comfilcon A）。正电子湮没寿命谱（PALS）用于表征所研究样品中自由体积孔的几何尺寸和比例。硅水凝胶和聚合物水凝胶隐形眼镜在自由体积尺寸及其比例上存在明显差异，这又与这些隐形眼镜的透氧性相关。除此之外，还进行了光谱（中红外）MIR和拉曼检测，以证明测试隐形眼镜中含水量的差异。
